My birthday is coming up next month and i love playing Guild wars on my downstairs PC the only problem is i have limited usage of that computer so i decided id buy a new video card for my upstairs pc. I like to play MMOs seriously so im not a frugal gamer. I have a budget of about 50-100 dollars. And im not sure of what my power level is but theres a switch underneath where you plug in the tower which is switched to 115 so im guessing 115watts? Im also from the united states. I was thinkin of getting this card http://www.walmart.com/catalog/product.do?product_id=8154257 Would it be compatible? I checked my device manager for the current video card that i have in and it says its in a PCI bus, i was guessing that this is important for you all to know.