Yo, no way dat laptop play doz modern gamez!
Seriously, though, I have an Acer Aspire 5520-5912 that specs similar to yours with the same IGP (GeForce 7000M + nForce 610M). It can barely run Enemy Territory : Quake Wars (running the Quake 4 engine) at 22 fps at 800x600 resolution and that's on 64 bit Linux; expect far worse performance if you keep the 32 bit vista it came with. On the other hand, games using older engines such as Urban Terror 4.1, which runs on the Quake 3 engine, works quite well, and *FAR* better under 64 bit Linux than 32 bit vista. I don't know if 64 vs 32 bits makes much difference yet (haven't run 32 bit UrT yet to test), but everyone knows vista is worse than a dog, a slug. Add an IGP to that and you're asking for trouble with any game engine made in the last 2-3 years.
Mike