I've seen a few threads asking around for laptops and I myself was looking for a decent priced one with an ATI card so thought I'd throw this out there.
I picked up a Toshiba Satellite from Office Depot with an AMD Turion 2.2 processor, 3 gig ram, 300 gig HD and an ATI HD 2400 (non integrated) vid card. They had it for $899. It was the best priced laptop I found with some nice specs and an ATI card.