i just got a hp nx6325 for 500 euros, they should be the same in dollars in the us.
it has a 15 inch xga display, a mobile sempron 3500+ (25W TDP), 512mb ddr ram, an ati x1150 integrated gfx card (i can play halo on this baby so its not that bad!, roughly the performance of a geforce 3 ti 200)...