Okay, so I run an old laptop computer, that was once my older sister's. She created an account by her name, and gave it a proper password. I use Windows XP, and so its easy to still view her account with the password from the guest account. She abandoned the computer and gave it to me. Well, an urgency has come up and now I really need the password. My sister has forgotten it. If there is an account, with a password which has been forgotten, and I can only access her documents, how do I just hack into the whole account, and rule over the whole thing? I need desperately to delete her account, and why, is a very, very long story. Can anyone help me?