I've looked and looked and the internet seems to have finally failed me, there's no information on my specific issue. I have two locations, and one server (sbs 2008); I need them to act like one physical LAN. I know it's possible, I just know how to set it up, or anything about VPNs, etc. So, just to clarify a bit more:

• 1 Small Business Server 2008
• ~30 Computers with varying systems from Windows XP to 7
• 2 Physical Locations
• I use redirected folders, but since that would consume a lot of bandwith over VPN, I have a machine over there that can be the workhorse for storage.
• Users need to access e-mail and shared databases from this server (or possibly some form of DFS with aforementioned workhorse) from the other building.

Is there a nice tutorial (or I nice person that wants to write it) online that can explain how to set up computers from an external network to act like they were in the LAN?