how to trace back the registration info?

From: Elsie (sagrjty_at_hotmail.com)
Date: 10/30/04 

Date: Sat, 30 Oct 2004 11:17:26 +0800

Hi, I need to know the registration info used when registering for MS Office
XP. Because I forgot if each office is registered under the individual users
or under the company's name.

Is there any way to get this info?