My brother gave me his old Macbook that is running Windows 7. I want to get rid of Windows and install Snow Leopard. The problem is that I can't access any of the boot camp options to manage partitions or anything like that. Windows 7 is the only OS installed on the computer. If I hold C when I start the computer, I can get to the dual boot screen but Windows is the only option. I've tried to access the OSX installation DVD in Windows, but it just ejects the DVD every time I put it in. Any advice would be greatly appreciated.