Well, doing a little bit of research doesent hurt. If you take your computer in for a video card, they are no doubt going to take advantage of you. A video card is perhaps the simplest part of a computer and it plugs in and out... I built my own computer, and I'm no nerd. Its no more complicated than plugging the yellow/white/red cables into the back of your TV with your DVD player or playstation. But people are intimidated by wires sometimes..

What are your specs and what game are you trying to play?