You guys have to remeber that he is in a default aircraft and they are almost always double the fps than a addon one.
I have a
AMD64x2 2.4
4gig ram
320, 500 gig hds
Nvidia 8800GTS 640ddr3
22" hd moniter
no overclocking what so ever, max ai, 28% cars, 100% airport cars, medium to high fs settings, and I am getting say with the posky 737 ill get 10fps