Hi there
I think you are looking for something like
Desktop sharing or remote assistance which is a different issue.
We used to use things like Netmeeting for this -- I don't think this works anymore with Windows 7.
You could take over a users desktop and run a program as administrator etc.
Bog standard RDP merely allows you to LOGON remotely to another computer -- which if you do to a Windows non server machine will EJECT the logged on user.
Perhaps some of THESE apps might be more what you are looking for
http://www.online-tech-tips.com/cool...ing-solutions/
Cheers
jimbo