Administrator is disabled. Help

Accidently I disabled administrator account and now I have just one user
guest account with limited privilegies. I know administrator's password but I
can't reenable it. How to reenable admin with guest account?
Windows XP SP2- NTFS

Boot to Safe Mode (F8 struck repeatedly, during the 'black screen' after the
BIOS screen)
The default "Administrator" account usually has a blank Password.
User Accounts in Control Panel will add a new admin account.

I tried boot safe mode, but then nothing appears. no admin, no user, nothing

315341 - How to Perform an In-Place Upgrade (Reinstallation or Repair) of
Windows XP: http://support.microsoft.com/default...b;en-us;315341

So, I must reinstall or repair winxp instalation?

Try hitting Ctrl+Alt+Del twice and see if you get a Logon box. Booting
on to the installation via the Recovery Console will also re-enable the
built-in Administrator account. If that fails there are free third
party reset utilities that can re-enable the account.

Don't bother with the Recovery Console, the information I gave is
incorrect, you will be able to logon but the account will only be
re-enabled for the RC session, it will be disabled again after you logoff.

Ctrl+Alt+Del on safe mode helped. I loged on like admin and reenabled it.
Thanks for all

You're welcome.

Thank you very much for your solution for enabling the administraor account. Thanx

That probably means you are in Administrator mode... on my computer
there are no user accounts and I am alway the administrator.