Matt,
Never done this on a Windows 2000 system but I believe you can set up a VPN dialin by going to "My Network Places" properties then click on "make a new connection" Using the wizard I believe you should be able to setup a dialin for Windows 2K. Don't quote me on this most of the VPN's that I setup are Cisco based, I just know how to do it on NT4 because I was playing around one day.....Hopefully this will point you in the right direction..
david e
*end users are just like computers, some you can work with...others just need a simple reBOOTing to fix their problems.*