I currently have Vista installed on its own hard drive via bootcamp. I'd like to upgrade to Windows 7, but I don't want to go through the entire bootcamp install process again. Specifically, I don't want to lose the data I already have on the windows HD. Is it possible to do an in-place upgrade from Vista to 7 (without breaking boot camp)? Also, will upgrading to snow leopard break any existing bootcamp installs?