I posted this in the Vista forum...........got no response!
I am using a VPN connection to log onto our corporate exchange server. Every time I log on and fire up outlook my internet connection drops out. I'm no expert but our networking guy seems to think that there is a setting that is assuming the local internet connection also needs to be routed through our remote server, and the firewall causes it to fail.
I have two computers connected to my gateway ethernet sockets. One computer is configured to access the VPN, and the connection works fine. However as soon as I connect with that machine to the VPN my internet connection fails. It does not affect the internet connection to the second machine.