Lol, the Hard Drive speed doesn't matter too much for games once you're playing them (other than things like level loading and initial startup).
I'm a gamer, and I'm still using my 7200 EIDE HD and am very happy with it.
But yes, the SATA HD's are faster than IDE and should give you better performance in game loading and level loading. But as far as overall game performance, HD read/write speed doesn't affect much. That's controlled majorly by your cpu/ram/vid card
Its a frigging Laptop, not a Labtop!!!!