How to View Contacts by Email in Windows Live Messenger
- 1). Start Windows Live Messenger and sign in to your account.
- 2). Right-click the contact at the top of your list and select "Edit Contact."
- 3). Copy the contact's email address from the top of the "Edit Contact" menu.
- 4). Paste the email address into the "Nickname" box.
- 5). Click "Save," then close the window. Repeat this for each of your contacts.
Source...