Tacitly acknowledging the problems its had getting people to adopt Windows Vista vs. Windows XP, Microsoft said on Tuesday that it will be selling upgrade versions from Windows XP to Windows 7. However, the upgrade will really only apply to pricing; there won’t be a way to do an in-place install of Windows 7 over Windows XP. Instead, the end user will have to do a fresh install of Windows 7. In an email, a company spokeswoman said: “Regarding XP, customers can purchase upgrade media and an upgrade license to