Windows 7 Upgrade Guide

With the upcoming release of the newest operating system from Microsoft, the said company had been trying hard to make people using their existing OS to upgrade to Windows 7. According to a leaked out chart, existing XP users will need to do a custom install wherein users would need to completely wipe out their existing OS. Meanwhile, Vista users are given the option to do an upgrade from their existing Vista edition to its corresponding edition in Windows or to Windows 7 Ultimate (ie. Vista Home Premium to Windows 7 Home Premium or Ultimate only).