I'm not sure what it is that you did. I assume the friend of a friend (FOF) installed windows XP for you, setting up an account in his own name, and that you added your own account afterwards, so that you get a login screen with a choice of two accounts (FOF's and yours). You can only add an account by logging on with FOF's account. The FOF account would be an administrator account, which allows for adding/deleting accounts. If you set up your own account as 'limited' you cannot add/delete accounts. If this is the case, you'd need to log on as FOF and change your own account type to 'administrator'. Then it's a simple matter of Control Panel, User Accounts, Delete an account. Then delete FOF's account. Hop this helps.