Okay, even though the title says a different thing, this does mostly only affect my Ubuntu Installation.
I have a dualboot setup for Windows XP and Ubuntu, Windows had been installed first, then Ubuntu, etc. Now I want to "upgrade" my Windows XP Installation to Windows 7. I don't care whether I lose my Windows XP files or not; but I REALLY do not want to lose my Ubuntu Installation.
So, How would I get rid of Windows XP, install Windows 7, keep my Ubuntu Installation intact, and if possible, do all that with not too much hazzle?