i'm trying to setup my VPN which will NOT work, but if i connect using REMOTE DESKTOP CONNECTION it works fine

1- what am i doing wrong that the VPN won't work?

2- what's the difference between VPN and RDC?

3- are there security issues i need to know about when using VPN and RDC?

4- how many simultaneous connections can i have with VPN? RDC?

5- is there a speed issue with VPN vs. RDC?


i'm running a win2000 terminal server at main office, connecting remotely (several offices) with win2000pro and win98 machines/clients... the server has a STATIC IP address connection is via broadband/dsl.