4350 is not really a gaming card, a 4650 (DDR3 is best http://www.newegg.com/Product/Product.aspx?Item=N82E16814131360&cm_re=4650-_-14-131-360-_-Product) or a 4670 http://www.newegg.com/Product/Product.aspx?Item=N82E16814161315&cm_re=4670-_-14-161-315-_-Product, depending on your power supply, will make things run way better. Another gig or 2 of RAM won't hurt either.
If you have at least a 350 watt PSU from a good maker you will be able to run either of those cards. Oh, and your case needs enough room around the PCIe slot for the 4670, it's a 2-slot card from HIS.