If you have your Vista computer in the UCC Office and it is not talking to the network (you cannot see your email, files, or printers) then attempt to repair the connection as sometimes when you travel the network card remains off in the docking station when you reconnect your computer.
1) right click the network icon 
and choose Diagnose and repair. This may automatically repair the problem.
2) IF the problem is still not resolved, right click and choose "Network and Sharing Center"
2b) Right-click the X between your computer's symbol and the internet and choose to connect or enable device.you should end up connected to the internet (Network) and be able to see your resources.