you should also take a look at the port of your cards, you have the following:
AGP, pci & isa:
![](http://www.si87.com/Products/Videocards/agpvspci/agp-or-pci-or-isa.jpg)
and you got pci-e (express) and pci-x
![](http://lib.store.yahoo.net/lib/cooldrives/sata-pci-express-pci-card.jpg)
![](http://www.ocinside.de/assets/mainboard/asrock_939sli_esata2_part1.jpg)
the upper white one is also an pci-e
so make sure if you bought a card that has an AGP slot for example, that you have that slot in your computer
![Wink ;)](http://forum.shipsim.com/Smileys/default/wink.gif)
btw if i was you i should buy the **** blue card wich is $74.99
![Wink ;)](http://forum.shipsim.com/Smileys/default/wink.gif)