I have a company website written in vb.net. There are 5 master pages.

I recently began utilizing a forum application, also asp.net 4.0, but this one is written in C#. My forum directory is domain.com/knowledgebase/.

Is there any possible way to take one of my vb.net master pages and somehow integrate into the /knowledgebase/ directory? Here's what's currently

This is what's in the top of every page in my site:

<%@ Page Title="USS Vision Inc." Language="VB" MasterPageFile="~/homepage.master" 
AutoEventWireup="false" CodeFile="default.aspx.vb" Inherits="_default" 
culture="auto" meta:resourcekey="PageResource1" uiculture="auto" Debug="true" %>

This is what's in my /knowledgebase/ directory:

<%@ Page Language="C#" AutoEventWireup="true" ValidateRequest="false" 
Inherits="YAF.ForumPageBase" culture="auto" uiculture="auto" %>
<%@ Register TagPrefix="YAF" Assembly="YAF" Namespace="YAF" %>
<script runat="server">

Is it somehow possible to use, for instance, homepage.master in the /knowledgebase/ directory? If so, how would I accomplish this? Thanks for any guidance anybody can offer!