If i have two computer networked together , example my coputer and my dads. I have access to all files and HD. How can i gain access where i can run programs from my computer on his ? Like when i move mouse around and all it moves his around and i can run performance programs that i installed on his computer from my computer upstairs ??

i tried that remote desktop connection that is preinstalled but it says i need windowsXP PRO . I tried anyway with no luck.