I am on Windows Vista x64. All I remember is installing ruby
1.9.1p243 (2009-07-16 revision 24175) [i386-mingw32]. I suppose
RubyGems was installed automatically with that version. I forget
the details of that installation but, I assume UAC prompted me to
go into temporary Admin mode as it does for most installations.
So do you know how I would go into Admin mode (while in the
command prompt ) to update RubyGems ?