There is tons of videos on youtube about it YouTube - How to remove NetIntelligence from your pc check it out, if that dont work do a quick search for "Remove NetIntelligence"
I currently have my video card also connecting to my receiver which connects to my flat screen. I extend my displays and normally I use it just for sound. Occasionally I use it for the picture as well... When extended displays is disabled I can drag windows to left and right and duel split...