I have three buildings on a campus. They are very close together. Each building has a cable modem and no more than 15 computers. Up until now, there has been no server. I am new to this environment and was asked to provide a solution. We are going to buy 1 Windows 2003 server. What is the best way to setup the network for all the machines to logon to that one server? Should I get rid of the calbe modems and have one connection and run cable or wirless bridges to create one lan or should I just create a vpn? Whichever solutions is suggested, please provide some general details as far as which hardware or software is suggested for either bridge or wireless, or vpn?