XFX GeForce 9500 GT 512MB PCI-e Video Card

does anyone know if a XFX GeForce 9500 GT 512MB PCI-e Video Card would fit and work in a dell dimension 2400? im willing to go out and buy this i just need to make sure it will work first.... this has been the hardest thing just to play my new sims 3 game!!!!

 

Looking at this set of specifications, the 2400 series doesn't have an add-in graphics adapter slot, it only has onboard graphics (part of the motherboard).
http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/specs.htm

A 2.4GHz CPU and 1GB of RAM are also minimum system requirements for the game
http://www.thesims3.com/game/systemreq
If you run on minimum requirements, you may have to lower "features" in the game so that the system can cope.

Matt