I have been trying to install windows 7 via boot camp on my new imac. Every time I get to the install screen it asks where do I want to install windows. I choose the boot camp partition and format it as it says. The computer than tells me that set up cannot find a partition to install on. In the boot camp installation guide it says that the partition will be partition 3 but mine says partition 4. Does this have anything to do with why I am not able to install. Please help.