Question about Outlook Express

I assume that Windows Live Mail (version 2009) was signed into a ID (that I have forgotten) prior to doing the following:

On my Windows 7 online racing computer I have my GP******mc@hotmail e-mail account setup using Windows Live Mail and On my wife's Windows 7 desktop computer in the other end of the house I have my Hu********** Email address is removed for privacy *** and P*********1942@gmail accounts setup using Windows Live Mail also. Since I use her desktop most of the time (and the racing computer is powered off most of the time) I thought it would be great if I could check my GP******mc@hotmail on her computer. I know I could check it using a browser but that's one more step plus the contacts don't show up that way. So I added GP******mc@hotmail to the exiting Windows Live Mail on her computer a couple of days ago. Everything was working great (I thought. All three e-mail accounts showing up in WLM) until I went to send out a new e-mail from my Hu********** Email address is removed for privacy *** account when I discovered, to my horror, that all 75 or so contacts had been replaced by the 17 GP******mc@hotmail contacts. I noted that at the upper right corner of WLM that WLM was signed in as GP******mc@hotmail. When I signed in as t********* Email address is removed for privacy *** (which is the only other Microsoft account I can remember) all contacts go away. If I try to sign WLM in as Hu*******d@gmail or P*********1942@gmail it says the accounts (Microsoft Accounts) do not exist. Since I have a lot of Sent e-mail saved in each of those two accounts I could probably look at each one using properties to get the e-mail address which each was sent to (except most were sent using Bcc: and no address shows up) and manually re-entering them but that would take quite a while. A small number of the lost people have in the past sent me e-mail so It was no problem right clicking on those e-mail and clicking on add to address list. But that still leaves me short over 50 e-mail address. Do you know of any other way of getting my lost contacts back? I thought of doing a System Restore to an earlier date but discovered that System Restore Point was never created (I swear it was at one time because I always do that when setting up a computer). If by chance that WLM was logged into a Microsoft ID (before I added the 3rd account) that I have forgotten, is there anyway to find out what other Microsoft IDs I may have. All I need is the ID because once I have the ID I would probably remember the PW. I would guess that once I sign WLN in using the forgotten ID that my contacts will return. I sure hope so. If not I'm at a loss as to what to do.