I would also highly suggest right-clicking on 'My Computer' and selecting Manage and goto the 'Local Users and Groups > Users' area and check if there are any unusual accounts (besides administrator, your login name, guest, etc. and delete any suspicious ones and set passwords for BOTH the administrator and your account since they are both administrative accounts and from what I know about XP are usually left un-passworded by default (BAD BAD BAD, you just gotta love m$ and their *ahem* security) otherwise, a hacker can just waltz straight into your computer and take over. I know of too many 2000/XP home users that leave their accounts un passworded.