[Omnirizon]

Mint is basically Ubuntu, but has slightly different menus and defaults that are supposed to be more comfortable for first time Linux users. You might try it.

plus, its default desktop/color scheme is like drinking a mint julep.

At any rate, you should install Windows 7 first, then Linux. At least I've been told. I think the Linux installer is a little more friendly to other OS than is the Windows one, or something. Not really sure.