Try task manager. Enable "Show processes from all users" and see if you can
elevate task manger. If you can elevate it then click on the Applications
tab and start a new task. Type in compmgmt.msc and you should be able to add
a user or edit the existing users.
--
Kerry Brown
Microsoft MVP - Shell/User
http://www.vistahelp.ca
"SimonW" <SimonW@discussions.microsoft.com> wrote in message
news:A383B678-931E-4A50-8FE4-352DA0F47CC8@microsoft.com...
> Hello
> I am unable to perform any Administrative tasks becasue my only true
> Administrator was previously hidden from the Welcome Screen and remains so
> after upgrading from XP to Vista Home Premium.
>
> When I attempt to run regedt32.exe As Administrator my UAC dialogue
> appears
> but there is no password box, and so am unable to elevate.
>
> I know this is a hot issue. Does anyone have a route thru' this?
>
> Thanks in advance, Simon