If the computer you're using to log into your Linux box has X11 running on it, I would suggest simply running a remote X session rather than using VNC.
If the IP of the remote computer is 10.0.0.1 for instance, you would type this at your terminal:
X :1 -query 10.0.0.1
you will be presented with a login screen, just like you logged into your box locally!
To enable remote X sessions, you have to click the red hat, then system settings > login screen, and then click the XDMCP tab, and then make sure "enable XDMCP" is checked in.
I would invite somebody to log into my linux box just for fun under my guest account, but my univ has put up a strict firewall that makes it impossible.
[ May 01, 2003: Message edited by: Linux User #5225982375 ]