I want to upgrade my dell 2400 dimension to a better graphic cards to handle win

[jakely2378]

i have a pci slot on my computer and I want to upgrade to window 7, what is the best graphic pci card for window 7

 

[4870x2card]

im not sure what kind of card to get but, you outta read this forum before you do anything!!!(http://en.community.dell.com/support-forums/desktop/f/3515/t/19298293.aspx)