You're not giving me enough information to answer you and even to determine if you are off topic or not for this forum, but I suspect that you are. This forum is for Windows Live OneCare - http://onecare.live.com
If you are talking about forgetting a password for a Hotmail account, I'd normally refer you to http://support.live.com and the link for support for Windows Live Hotmail, but not knowing the email address would make it impossible to recover the password.
Please provide more information about your problem and we can try to direct you if the above link to support does not apply.
In the meantime, I'm leaving you post here, but am changing it from a question to a comments, since I believe you are off topic.
-steve