not possible, you'll have to use bootcamp and install windows. there's no way around it, i don't know what peoples success with something like VMware, and virtualising windows and botting, but really the best thing you can do is just use bootcamp.
You can use Parallels to create a virtual desktop in Mac OSX.
I have a partition of Windows 7 created using BootCamp, and with Parallels I can use both Windows and Mac OSX at the same time. Then I can do my work in Mac OSX, and do my botting at the same time
I never encountered any problems, though i recommend atleast 4GB of ram.