Remote Control

Is anyone aware of a remote control application that works in Windows 7? We’ve used Altiris for about 10 years and have just discovered that it won’t work with Windows 7 PCs.
The suggested “work-around” is to use Terminal Services/Remote Desktop. This doesn’t allow us to see what the user is doing or show them how to do something, so it’s not really a solution.

Is anyone aware of a product that provides this facility and that works on a Domain. Ideally, it should work transparently on all versions of Windows since XP.

Thanks