registry not available anymore...

From: Kyle (viprdude_at_comcast.net)
Date: 05/21/03 

Date: Tue, 20 May 2003 18:20:01 -0700

the registry has shut itself off to my access. i am the
full computer admin and no one else uses the computer.
how can i get win xp to allow me to view and edit the
registry again? all help appreciated, thank u for ur time.