My LAN disapears after I setup the VPN?

Hello people,

I have a 2003 server with exchange 2003 installed and am running DHCP. I have 2 NICs installed but am only using one.

All is working well until I configure the VPN. Once the VPN has been setup the LAN is lost. Workstation can’t connect to server, no browsing, can’t ping server’s IP address etc. Once I remove the VPN all is back up and running with no problems.

At the risk of going bald sooner than my time I was woundering if anyone might offer some suggestions?