It would be better to consider the possibility of updating to a more capable computer.
The general specifications (CPU, RAM) are at the very minimum of requirements, but the limitation of only PCI slots makes it a poor prospect for upgrading:
"Standalone cards that are installed in PCI slots (not PCIe or PCIx or AGP) ... will perform poorly."http://www.thesims3.com/game/systemreq
Edited by Platypus, 29 August 2009 - 06:36 AM.