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i am in the crysis beta. you probably won't be running on high, high hurts my mac. though, that is in multiplayer, which takes much more resources, maybe in single player it will run with higher graphic settings. it has a high range of settings to go through. That and the fact that if you have a dx10 compatible card even more things become available. You will be able to run it, but not on high, probably medium.
Also Crysis has much much more enviornmental detail and physics stuff going on than Bioshock, so of course it runs rather bad, runs horrible on my PC that plays Bioshock at 40-50 FPS! Also, in this point in time, don't bother at all with DX10, not one game out with DX10 support has any major difference that would make you want to give up 20% of your performance with Vista (if you don't already have it that is). My 2 cents is that Bioshock should run relatively fine on highish settings (not highest, but not medium...you catch my drift?) And DX9 is the way to go, DX10 is not worth it at the moment, and on an 8600GTM, I think not at all... Go get XP and Bioshock, it is a beautiful game. 
Hey I have done a little search but haven't been able to find a mac compatible version of bioshock. Any ideas if they make mac versions of bio shock or do i have to go with the windows version...which i dont want to do! Also I was wondering if a Macbook Pro 2.2 can run it with fairly high graphics settings. Thanks for the help. Sorry if there were any stupid questions...I am new to macs
You dont have to believe me.
