PC-camera face recognition

Actually it's similar to the face recognition but a little different.

So I've made a DIY LCD-Projector like in the cinema,so this thing is hooked up to my PC with a DVI cable and of course project's whatever is on the desktop.Picture is pretty big to be accurate it's (3,00x2,20 length x height meters).My idea is simple...make the pc-camera to search and react to a bright red spot from a laser pointer so that i can control the PC from a distance serving as a remote control,however i don't have the skills or the time to make this so i turn to you guys to try and make a software to have this work .If someone out there can tell me a programing software and possibly finds a manual to it to at least try and make it myself though i dought that i will do my best.