How to Change Administrative Rights in XP Home
- 1). Log on to your Windows XP Home account using an account with administrative rights. In order to make changes to any accounts you need to have admin rights.
- 2). Click on the "Start" button and choose "Control Panel" from the menu. Double-click on the "User Accounts" icon.
- 3). Select "Change an Account" from the menu and choose the account you want to change. Choose "Change My Account Type" from the list.
- 4). Choose "Limited" to remove the administrative rights from the account. Click the "Change Account Type" button to complete the change.
Source...