Here is my code:
Imports System.Data.OleDb
Imports System.Drawing.Printing
Namespace Print
Public Class Form1
    Inherits System.Windows.Forms.Form
    Dim PrintC As PrinterClass
    Dim conn As OleDb.OleDbConnection
    Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=..\\db1.mdb"
    Dim sql As String = String.Empty
    Dim ds As DataSet
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        FillDataGrid()
        '//create printerclass object
        PrintC = New PrinterClass(PrintDocument1, dataGrid)
    End Sub
    Private Sub FillDataGrid()
        Try
            Dim dt As New DataTable
            Dim ds As New DataSet
            ds.Tables.Add(dt)
            Dim da As New OleDbDataAdapter
            con.Open()
            da = New OleDbDataAdapter("SELECT * from klient ", con)
            da.Fill(dt)
            con.Close()
            dataGrid.DataSource = dt.DefaultView
            Dim dTable As DataTable
            For Each dTable In ds.Tables
                Dim dgStyle As DataGridTableStyle = New DataGridTableStyle
                dgStyle.MappingName = dTable.TableName
                dataGrid.TableStyles.Add(dgStyle)
            Next
            ' DataGrid settings
            dataGrid.CaptionText = "TE GJITHE KLIENTET"
            dataGrid.HeaderFont = New Font("Verdana", 12)
            dataGrid.TableStyles(0).GridColumnStyles(0).Width = 60
            dataGrid.TableStyles(0).GridColumnStyles(1).Width = 140
            dataGrid.TableStyles(0).GridColumnStyles(2).Width = 140
            dataGrid.TableStyles(0).GridColumnStyles(3).Width = 140
            dataGrid.TableStyles(0).GridColumnStyles(4).Width = 140
            dataGrid.TableStyles(0).GridColumnStyles(5).HeaderText = ""
            dataGrid.TableStyles(0).GridColumnStyles(5).Width = -1
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
    End Sub
    Private Sub btnPrint_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPrint.Click
        'create printerclass object
        PrintC = New PrinterClass(PrintDocument1, dataGrid)
        PrintDocument1.Print()
    End Sub
    Private Sub btnPreview_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPreview.Click
        'create printerclass object
        PrintC = New PrinterClass(PrintDocument1, dataGrid)
        ''preview
        Dim ps As New PaperSize("A4", 840, 1150)
        ps.PaperName = PaperKind.A4
        PrintDocument1.DefaultPageSettings.PaperSize = ps
        PrintPreviewDialog1.WindowState = FormWindowState.Normal
        PrintPreviewDialog1.StartPosition = FormStartPosition.CenterScreen
        PrintPreviewDialog1.ClientSize = New Size(600, 600)
        PrintPreviewDialog1.ShowDialog()
    End Sub
    Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
        'print grid
        Dim morepages As Boolean = PrintC.Print(e.Graphics)
        If (morepages) Then
            e.HasMorePages = True
        End If
    End Sub
End Class
End Namespace
This is how data looks in DataGrid (that's perfect)...
and here is how it looks when I click PrintPreview. (I don't want the time to appear there, the "12:00:00" part. in database the date is stored as Short Date (10-Dec-12)
Can somebody suggest a way around that?
Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Printing
Imports System.Collections
Imports System.Data
Namespace Print
Public Class PrinterClass
    '//clone of Datagrid
    Dim PrintGrid As Grid
    '//printdocument for initial printer settings
    Private PrintDoc As PrintDocument
    '//defines whether the grid is ordered right to left
    Private bRightToLeft As Boolean
    '//Current Top
    Private CurrentY As Single = 0
    '//Current Left
    Private CurrentX As Single = 0
    '//CurrentRow to print
    Private CurrentRow As Integer = 0
    '//Page Counter
    Public PageCounter As Integer = 0
    '/// <summary>
    '/// Constructor Class
    '/// </summary>
    '/// <param name="pdocument"></param>
    '/// <param name="dgrid"></param>
    Public Sub New(ByVal pdocument As PrintDocument, ByVal dgrid As DataGrid)
        'MyBase.new()
        PrintGrid = New Grid(dgrid)
        PrintDoc = pdocument
        '//The grid columns are right to left
        bRightToLeft = dgrid.RightToLeft = RightToLeft.Yes
        '//init CurrentX and CurrentY
        CurrentY = pdocument.DefaultPageSettings.Margins.Top
        CurrentX = pdocument.DefaultPageSettings.Margins.Left
    End Sub
    Public Function Print(ByVal g As Graphics, ByRef currentX As Single, ByRef currentY As Single) As Boolean
        '//use predefined area
        currentX = currentX
        currentY = currentY
        PrintHeaders(g)
        Dim Morepages As Boolean = PrintDataGrid(g)
        currentY = currentY
        currentX = currentX
        Return Morepages
    End Function
    Public Function Print(ByVal g As Graphics) As Boolean
        CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
        CurrentY = PrintDoc.DefaultPageSettings.Margins.Top
        PrintHeaders(g)
        Return PrintDataGrid(g)
    End Function
    '/// <summary>
    '/// Print the Grid Headers
    '/// </summary>
    '/// <param name="g"></param>
    Private Sub PrintHeaders(ByVal g As Graphics)
        Dim sf As StringFormat = New StringFormat
        '//if we want to print the grid right to left
        If (bRightToLeft) Then
            CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right
            sf.FormatFlags = StringFormatFlags.DirectionRightToLeft
        Else
            CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
        End If
        Dim i As Integer
        For i = 0 To PrintGrid.Columns - 1
            '//set header alignment
            Select Case (CType(PrintGrid.Headers.GetValue(i), Header).Alignment)
                Case HorizontalAlignment.Left 'left 
                    sf.Alignment = StringAlignment.Near
                Case HorizontalAlignment.Center
                    sf.Alignment = StringAlignment.Center
                Case HorizontalAlignment.Right
                    sf.Alignment = StringAlignment.Far
            End Select
            '//advance X according to order
            If (bRightToLeft) Then
                '//draw the cell bounds (lines) and back color
                g.FillRectangle(New SolidBrush(PrintGrid.HeaderBackColor), CurrentX - PrintGrid.Headers(i).Width, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height)
                g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX - PrintGrid.Headers(i).Width, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height)
                '//draw the cell text
                g.DrawString(PrintGrid.Headers(i).CText, PrintGrid.Headers(i).Font, New SolidBrush(PrintGrid.HeaderForeColor), New RectangleF(CurrentX - PrintGrid.Headers(i).Width, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height), sf)
                '//next cell
                CurrentX -= PrintGrid.Headers(i).Width
            Else
                '//draw the cell bounds (lines) and back color
                g.FillRectangle(New SolidBrush(PrintGrid.HeaderBackColor), CurrentX, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height)
                g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height)
                '//draw the cell text
                g.DrawString(PrintGrid.Headers(i).CText, PrintGrid.Headers(i).Font, New SolidBrush(PrintGrid.HeaderForeColor), New RectangleF(CurrentX, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height), sf)
                '//next cell
                CurrentX += PrintGrid.Headers(i).Width
            End If
        Next
        '//reset to beginning
        If (bRightToLeft) Then
            '//right align
            CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right
        Else
            '//left align
            CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
        End If
        '//advance to next row
        CurrentY = CurrentY + CType(PrintGrid.Headers.GetValue(0), Header).Height
    End Sub
    Private Function PrintDataGrid(ByVal g As Graphics) As Boolean
        Dim sf As StringFormat = New StringFormat
        PageCounter = PageCounter + 1
        '//if we want to print the grid right to left
        If (bRightToLeft) Then
            CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right
            sf.FormatFlags = StringFormatFlags.DirectionRightToLeft
        Else
            CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
        End If
        Dim i As Integer
        For i = CurrentRow To PrintGrid.Rows - 1
            Dim j As Integer
            For j = 0 To PrintGrid.Columns - 1
                '//set cell alignment
                Select Case (PrintGrid.Cell(i, j).Alignment)
                    '//left
                Case HorizontalAlignment.Left
                        sf.Alignment = StringAlignment.Near
                    Case HorizontalAlignment.Center
                        sf.Alignment = StringAlignment.Center
                        '//right
                    Case HorizontalAlignment.Right
                        sf.Alignment = StringAlignment.Far
                End Select
                '//advance X according to order
                If (bRightToLeft) Then
                    '//draw the cell bounds (lines) and back color
                    g.FillRectangle(New SolidBrush(PrintGrid.BackColor), CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height)
                    g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height)
                    '//draw the cell text
                    g.DrawString(PrintGrid.Cell(i, j).CText, PrintGrid.Cell(i, j).Font, New SolidBrush(PrintGrid.ForeColor), New RectangleF(CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height), sf)
                    '//next cell
                    CurrentX -= PrintGrid.Cell(i, j).Width
                Else
                    '//draw the cell bounds (lines) and back color
                    g.FillRectangle(New SolidBrush(PrintGrid.BackColor), CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height)
                    g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height)
                    '//draw the cell text
                    '//Draw text by alignment
                    g.DrawString(PrintGrid.Cell(i, j).CText, PrintGrid.Cell(i, j).Font, New SolidBrush(PrintGrid.ForeColor), New RectangleF(CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height), sf)
                    '//next cell
                    CurrentX += PrintGrid.Cell(i, j).Width
                End If
            Next
            '//reset to beginning
            If (bRightToLeft) Then
                '//right align
                CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right
            Else
                '//left align
                CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
            End If
            '//advance to next row
            CurrentY += PrintGrid.Cell(i, 0).Height
            CurrentRow += 1
            '//if we are beyond the page margin (bottom) then we need another page,
            '//return true
            If (CurrentY > PrintDoc.DefaultPageSettings.PaperSize.Height - PrintDoc.DefaultPageSettings.Margins.Bottom) Then
                Return True
            End If
        Next
        Return False
    End Function
End Class
End Namespace