Use
Messenger Plus!.
To the nick of a contact use the Custom Names Feature
quote:
Custom Names
* This feature allows your to set custom names for your contacts.
* The contact list can display the custom names, which enables the "view by email" option in Messenger, and it can use custom contact names while chatting.
* This function can be accessed in the Preferences panel, in the Contact list section.
See
what does the tutorial say
Edit-
Windows Live Messenger has this feature in-built.