I get the error message:
Set registry key
HKLM\Software\Microsoft|.NETFramework\InstallRoot to point to the .NET Framework install location.
so I go read and find Vista doesn't support lower versions unless you re-install Vista! (reformat the harddrive)
http://blogs.msdn.com/b/astebner/archive...vista.aspx
"Quote" Repairing .NET Framework 2.0/3.0 registry entries on Windows Vista
Unfortunately, there is not an easy way of repairing the registry keys/values that are installed by Windows Vista like there is for files. If you want to try to repair the registry keys/values that are a part of the .NET Framework 2.0 and 3.0, you will need to
run Windows Vista OS setup again and repair the OS. "unquote"
.
Which means I'll not be enjoying the update anytime soon.