Need help controlling a second pc

[Freddie]

I need a software that will allow me to have the video from the second PC sent to a window on my main PC.

You may be able to do this with Windows Media Encoder. General info:

http://www.microsoft.com/windows/win...r/default.mspx

Capturing a window's content for streaming broadcast:

http://www.microsoft.com/windows/win...screencap.aspx

You'll still have the problem of injecting mouse events through GameGuard.