I have 2 computers behind my router, one with windows 2000, one with xp sp2. I can use my xp machine as a client to log onto the 2k machine with tight vnc, but not the other way around. I have: turned on my tight vnc server disabled xp firewall when I try to connect (with either the computer name or ip address), it says "Failed to connect to server" Also, I can't telnet to port 5900 on the xp machine. Any help would be greatly appreciated! ***UPDATE*** I set my display number to "auto" and now it works. However, eventually I want to be able to control both computers via VNC over the web, so I want one to be at port 5900 and one at 5901. How do I do that?