Quote:
I take it this was a limitation of the PPTP protocol, and not Windows 2003's fault?


Correct.

Basically, it means: Trying to tunnel through a NAT router to a VPN server is really limited. You're better off getting a router that can work as a VPN endpoint itself. As was mentioned above, there are some cheap routers that work this way, or can be firmware-flashed to work this way.
_________________________
Tony Fabris