Not able to partition?

Hey guys,

I have bought Call Of Duty 6, and installed Bootcamp on my MacBook Pro (specs on the bottom) and it worked with windows vista. I then uninstalled my boot camp partition because I bought windows 7 and parallels, and installed that and Cod was laggy, so I uninstalled parallels, and tried to install my boot camp partition again. (refer to image 1) It doesn't work because it says something, (refer to image 2).

Please don't give me bad news! If I have to i have a windows pc and I will play cod on that. I am so confused

I also wanna make sure i havent stuffed up my hard drive :S thanks!

Daniel