How do I re-establish myself as system administrator?

[peeper]

I have Vista. Somehow, something removed me as system administrator on my desktop. How do I put myself back in charge?:willy: I can't even create shortcuts on my desktop! Thanks in advance...

http://i41.tinypic.com/2wokg8h.jpg

[peeper]

^we bumpin' on sunset...

[DBM]

http://www.vistax64.com/vista-account-administration/142208-lost-admin-privileges.html

[peeper]

thanks dbm!