Forgot administrator password

[Happy Lady]

  I started up my brand new pc and set up the admin password and promptly forgot it! Can anyone help me? Someone told me to use FDISK but I don't know how! Can someone help me with that? They also told me that I would have to delete Windows and then re-download it, is this true? And how do I do that?

HELP!!

[SuperDave]

Here is a link. I cannot vouch for the effectiveness of this program because I've never used it.
http://www.password-reset.com/?gclid=CLDlpYK1tY8CFRFSagod2hagcw

[krone2800]

re-download the xp..........

[dairyman]

Boot into Safe Mode and logon with the inbuilt Administrator account.

When you are logged in, click on Start, Run, type in control userpasswords2 and click OK.

Click on your administrator account, and click Reset Password.
Type in a new password, and click OK.

Restart Windows in normal mode.