I don't really use games on my imac but i do know a few things about bootcamp. Basically when you get your computer there are two options if you want to install windows. Parallel or Reboot(don't know the actual name)
Reboot version: When you get your computer it will ask if you want to partition your hard drive so that a set number of gb are dedicated to running a separate version of windows. (I personally use xp.) This method is fairly straight forward and as far as I know better for protecting your mac from windows based viruses.
Parallel version: This version I have not used myself but have some understanding of how it works. Instead of having to reboot your mac and run a full windows os, you can simply open windows files and applications in mac osx with some sort of work around. This seems to be complicated to set up and could cause more risk of windows viruses.
Reboot version: When you get your computer it will ask if you want to partition your hard drive so that a set number of gb are dedicated to running a separate version of windows. (I personally use xp.) This method is fairly straight forward and as far as I know better for protecting your mac from windows based viruses.
Parallel version: This version I have not used myself but have some understanding of how it works. Instead of having to reboot your mac and run a full windows os, you can simply open windows files and applications in mac osx with some sort of work around. This seems to be complicated to set up and could cause more risk of windows viruses.