|"I urchased a Radeon hd 4350 1 gig of ddr2 memory"|
There's your problem. The HD 4350 is NOT a gaming card, it's a general purpose/home theater card. Try using the lowest game setting, your card isn't capable of "ultra".
The only other option is to buy a decent video card, but as kuwese pointed out, your power supply will be the limiting factor when it comes to upgrading.
Best Graphics Cards For The Money: February 2011