Forgetting the Windows XP administrator password can be a common occurrence and can be frustrating. However, there are ways to reset the administrator password and regain access to your computer. Here's a step-by-step guide on how to reset the Windows XP administrator password:

1. Restart your computer and press F8 before the Windows XP logo appears to enter safe mode.
2. Log in as the Administrator account (default password may be blank).
3. Go to Control Panel > User Accounts and select the account for which you want to reset the password.
4. Click 'Change Password' and follow the on-screen instructions to set a new password.
5. Restart your computer and log in using the new password.

It's important to note that these steps should only be used for legitimate reasons, such as forgetting your own password. It's crucial to safeguard your computer and password to prevent unauthorized access.