No sound on computer

I now have high-speed Internet and cable TV. This is cool stuff, since Youtube videos / multiple pictures / calling people whilst online / whatever else will work. Only now my computer has no sound, courtesy of the tech guy doing something to it. =/ Of course, the TV picture is still green from that time Eric H. came over and did something weird to it, but there's nothing to be done about that.

I think I'll call Shaw up later and complain, heh. I'd have no idea what an ethernet card is, which is what Jamie suggested to me earlier. Aiyoh! Maybe when Corey's not busy with his web stuff, he can help... whenever he gets on and such first, of course!