This TeamViewer ? http://www.teamviewer.com/index.aspx

come on... I haven't understood your question entirely... but if you asked about the teamviewer above.. then you should know there's no way for you to use this tool to control anything...
it uses a lot of bandwidth to send the remote desktop.. while its a non animated desktop... I've tried sometimes with a movie and it was like 1 or 2 frames / sec with redrawing everywhere (square draws)...

give up on this.. even on a LAN Gigabit network it won't be enough to control other computers gaming windows...

or... i just misunderstood your post and I apologize for this !