Here's something I found that might be of interest. I've downloaded but not yet tested.
"New Edition: Sep. 20, 2003 First, we wanted to point out that one thing will lack from all WindowsXPs after the removal of Windows Messenger. And that is Remote Assistance feature which by default is hooked up with Windows Messenger. The math is simple. No Windows Messenger, No Remote Assistance. But this brings up an even bigger discussion about security. Windows Messenger's remote assistance feature almost opens all doors and welcomes potential crackers to come try their malicious craft on your PC. Therefore, we recommend RealVNC as a replacement. You wont need to change your OS security to allow anyone in anymore. You can download a free copy of RealVNC server/client from..."
What is VNC
VNC stands for Virtual Network Computing. It is remote control software which allows you to view and interact with one computer (the "server") using a simple program (the "viewer") on another computer anywhere on the Internet. The two computers don't even have to be the same type, so for example you can use VNC to view an office Linux machine on your Windows PC at home. VNC is freely and publicly available and is in widespread active use by millions throughout industry, academia and privately.