After reading the following post: http://www.golod.com/2005/10/enabling-multiple-remote-desktop-sessions-in-windows-xp-professional-and-media-center-edition-2005/
I found that it is possible to use RDP on a "WinXP" or "Win Media Center" box to run multiple sessions (meaning, if someone logs in remotely it won't interfere with the local user).
My question is; Is this possible with VNC?
If so, how, and what version of VNC should I use to accomplish this (i.e. TightVNC, UltraVNC, RealVNC, etc...)?