I need to reinstall Lion asap, but I just found out I won't have a copy of Windows 7 for another week or two to install using bootcamp. I'm wondering if I can just reformat and install Lion, then when I get the Windows 7 key, I can install Windows 7 then? Will that cause any possible problems? Also, I was wondering where programs are installed for use in Windows 7? Do I have to allocate some amount of hard drive space to it that I may or may not be able to add/remove from later on? This is always a pain because it's hard to judge how much I'm going to use.