I set up wife's computer for her as limited, and myself as administrator
priviledges.  All of a sudden, my account has disappeared and I can't get it
back.  I have tried 'restore' and 'recovery' but can't get them to run as
wife isn't administrator.  I can't even upgrade the operating system with the
new vista disks I have as they also need 'admin' permission.  Everything I
try is blocked due to lack of an account with admin capabilities.  What can I
do???

Thanks

When Windows is Starting (after the Windows Vista, Windows XP or Windows 7
logos) type F8 constantly till Windows opens the account selector. There you
can see an account called Administrator.
(If you're using Windows 2000 or previous or Windows 2000 account selector,
type Administrator in the username field)

Event ID 5719: No Windows NT or Windows 2000 Domain Controller is available for domain <domain>.
User rights of logon server locally, start/stop services, kill pro
Novell/Active Directory
Built-in Administrator acct. for Domain be password never expires?
All domain Accounts being locked out
How to Restrict End Users to Login from any one machine on network
encryption that cannot be restored
Windows Vista
No Updates are successful
Security settings