For those of you with the intergrated video, almost all (if not all) intergrated video can be "overridden" with a new card. If you have a CompUSA in your area, they will even do the installation for you for free if you buy the card there.
All you need is a vacant slot inside the computer, and most full-size desktops have some "space" for a new card, unless you've already added some stuff.