Computer Advice

http://guides.macrumors.com/Which_Apple_notebook_should_I_buy?#Comparison_-_Power

Mac's aren't machines made for gaming. That doesn't mean it can't do it adequately though.

If you must keep using a Mac for whatever reason, your only course of action is a MBP, and preferably the 15" MBP. It has a lower native res which will help with speed and performs with similar gusto to the 17". You'll also need to bootcamp your machine to take advantage of the speed for playing games in an XP/Vista environment where you can use both gpus.

With Snow Leopard coming soon - it should help so you can use both cards simeoultaneously, though if the software will benefit, that's another question.

I would personally thinking about getting a windows-based laptop if you mainly want to play games and do work...

 

Keep one laptop. Sell the stuff and get a 15" MBP. Having two computers is rough as it is, and college will add more work than high school. The issue of keeping data in sync between the two computers is another problem.

 

If you really want to enjoy your gaming experience you should keep your macbook and buy a custom gaming pc. Macbooks are not very good computers to play games on even with the upgraded graphics card. If you have the money then get the pc and leave your macbook to less graphic intensive stuff like school work and the like.

 

Either build your own gaming pc, or get a Macbook Pro with dual graphics cards, but to make it worth while you'd need the higher end Macbook Pro with the 512 graphics cards and thats really expensive, you'd save a lot just building your own PC and you could have insane specs for the same price.