Clifford, he wants to Upgrade, installing overtop his existing Vista "without having to reinstall my apps and documents", with the Full version of Win7.
Maybe I'm wrong but I didn't think the full version would facilitate upgrade...I only ever went from XP to W7 so I will defer to Clifford's experience.
Errol, was your Vista 32 bit? Because I know for certain you cannot install 32-bit W7 overtop an existing 64-bit Vista.