Verified answer

The opposite way from how you deleted it. Or start, control panel, user accounts, create new account and give it admin privilages

Wait until it gets to the login screen. If it logs in automatically, then click START > LOG OFF

Press CTRL + ALT + DEL twice

The login screen should change themes to the XP Professional style with boxes for a Username and Password

For the username, enter 'administrator' without quotes.

For the password, leave it blank.

Then press enter, and log in.

If it works, skip down past the section below.

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If it says 'account restriction', the restart the computer and keep pressing F8 right as it shuts off and starts back on. Keep pressing it until you get to a screen that allows you to chose boot options such as SAFE MODE.

Chose SAFE MODE with Networking.

Then,

Press CTRL + ALT + DEL twice

The login screen should change themes to the XP Professional style with boxes for a Username and Password

For the username, enter 'administrator' without quotes.

For the password, leave it blank.

Then press enter, and log in.

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Go to START > Control Panel > Users

Add a user and make it the administrator, restart computer.

Finished.

what???

If you want to access windows XP hidden administrator account...

Go to login screen

Ctrl+Alt+Del

type in admin and password admin (i think)

or

When the pc is starting up hit F12 and go to safe mode

then u should see the hidden administrator account appear

reconfigure all your user accounts etc from there