Laptops- Will Halo 2 run on any of these with 4gb memory: GMA 4500mhd, nvidia GeForce 8200mg or Radeon HD4530?

I'm shopping for a laptop that will run Halo 2... Looks like it will have to be on Windows 7 as well. I've got it narrowed down to 3 choices. The one with Radeon HD4530 uses 512 mb discrete graphics and the other two use shared graphics. Thanks for any help :)