I need the best graphics card for my PC.?

I have a Hp p6130y and the integrated nvidia 9100 isnt all that good. I need something below 220$. I do basic gaming nothing CPU intensive though. Ive been playing FSX for a while and the frame rates just suck on it. so any options ? here are more detailed specs of my pc : a href="http://snpr.cm/WR3ct3.jpg" rel="nofollow"http://snpr.cm/WR3ct3.jpg/a , a href="http://snpr.cm/IcAWiM.jpg" rel="nofollow"http://snpr.cm/IcAWiM.jpg/a