remote connection fail

Hi,
In the past I have used VNC to connect to my mothers computer from college as to provide tech support. After installing her new hard drive, however, this no longer works. As a result, I decided to just go to the basics and use xp's remote desktop connection. I had her send me an invitation good for several days..and had her configure the computer to accept incoming connections. When I try to connect, i get a connection failed error. What would cause this?
She does not have any kind of firewall and i had her make sure the xp firewall wasnt installed. Her aol software has also been giving her problems (she cant browse in aol..only in IE). I'm really confused now and any suggestions would be appreciated..thanks

 

this may help. quoted from www.chicagotech.net.

Q: How to fix the error "Remote Assistance connection could not be established because the remote host name could not be resolved"?

A: When you receive an invitation from an Internet user whose computer is behind a router or firewall, the IP sent to you is the private IP behind the router or firewall. So that you can't access the computer. To fix this issue, 1) edit the invitation IP address. 2) Use Windows Messenger to establish the Remote Assistance session.

 

Hi...my mom and I are not behind routers/firewalls.....she's on a dsl line directly plugged into modem/computer..and I'm on a campus connection