There's a special character for Windows XP/2000 & NT that reverses the status behind your nickname in the contact list as you can see in this screenshot:

It also reverses your email address behind your nickname in a conversation window and it does the same to the status message ("[nickname] may not reply because his or her status is set to...") as you can see in the following screenshot:

Finally, it also reverses the word Conversation as the title of a conversation window as well as the User is typing message.
Obviously you're waiting for the instructions now... Here we go:
1) Download
this textfile and open it with
Wordpad (or
Notepad, but then you won't see the char).
2) In your text editor, hold Ctrl and press A (Select All). Then hold Ctrl and press c (Copy). You've now copied the special reverse character into your memory.
3) Click your nickname in MSN Messenger and select Personal Settings (or Tools > Options).
4) After typing your display name of choice, add another space (empty character), then hold Ctrl and press V to paste the reverse character. Finish off by pressing Enter.
Your nickname will be changed to whatever you typed and thanks to the special character your status will appear reversed in the contact list and your email and status message will be mirrored in the conversation window. Ready to baffle your contacts? :p
[Reported by: Huuf]