Says I am not the administrator

I have Vista and it updates ok via the windows update but I get
an error when I try to access the microsoft update web site.
I want to update my office suite 2007 as well as my O/S all at the same time
but
the microsoft site keeps telling me I have to have administrator authority to
enter the site despite me being the only user and administrator on my machine.
Any Ideas?
I use another machine with XP and it accesses the website ok so it is
obviously a problem with the Vista O/S.
Any help is much appreciated.

See
http://social.answers.microsoft.com/...0-a9e9a034cec4

Chris wrote:
> I have Vista and it updates ok via the windows update but I get
> an error when I try to access the microsoft update web site.
> I want to update my office suite 2007 as well as my O/S all at the same
> time
> but
> the microsoft site keeps telling me I have to have administrator authority
> to enter the site despite me being the only user and administrator on my
> machine. Any Ideas?
> I use another machine with XP and it accesses the website ok so it is
> obviously a problem with the Vista O/S.
> Any help is much appreciated.