I know that it won’t be as easy to upgrade to Windows 7. I was trying to install Windows 7 Upgrade to replaced a constantly-crashing Windows Vista. Since I have only a Windows 7 Upgrade disc for this computer (the computer is not mine). The attempt to install Windows 7 on top f the broken Windows Vista is painful since the idiotic Windows Activation would not acknowledge the previous Windows.
Long @#$%&#**@$ story short, I managed to install Windows 7 Upgrade and successfully activated it. The only thing is that now the system drive is designated as Drive J. Thanks a lot, Microsoft!