Microsoft official Vista to Vista upgrade information, including how to upgrade from Windows XP and Windows 2000http://192.168.2.20/blogs/doverton/archive/2007/02/15/microsoft-official-vista-to-vista-upgrade-information-including-how-to-upgrade-from-windows-xp-and-windows-2000.aspxhttp://support.microsoft.com/default.aspx/kb/932616/en-us General information about how to install Windows Vista Windows XP Service Pack 2 (SP2) How to determine whether your computer is running a 32-bit version or a 64-bit version of Windows XP InstallationenCommunityServer 2008.5 SP2 (Build: 40407.4157)