I use my 900mhz Celron EEEPC as the controlling computer for my astrophotography rig plus my everyday lappy, I control it with another computer and i have no problems at all.
I utilize a program called Team Viewer its free to use in a private situation, and works a dream either via home network wired/wireless connection or internet connection.
this image was taken while i was having christmas dinner and if it wasn't for the fact that i don't have automatic focus control it would have been compleately automated.
http://s700.photobucket.com/albums/w...gmanandM42.png