There is no "MSN X" plugin for Messenger Plus! AFAIK....
What there is, is like Sunshine said,
a colorchanger.
There is also
a skin package which is sometimes refered to as "MSN X"-skins.
But the thing you mean, I think, is
a bot called "MSN X" which is suppose to be compatible with Messenger Plus!. So this is very different then being a plugin for Messenger Plus!. The bot is an addon for MSN Messenger 6.2 and the ads about it say that a version for MSN Messenger 7 is coming "soon" (whatever that means).
However, every link to the download points to the same unavailable/suspended page though, so no-one can "check it out" for you....
Also, I don't think many of "us" have ever heared of it, so maybe that says also something about it....
see:
http://pc-news.org/article1668.html
http://www.dookyweb.com/index.php?seccion=descargas&action=file&id=544
http://www.empyrea.net/item/msn-x-1-0-final-released
http://www.seek18.com/adultboard/modules/mydownlo...201.0%20Final.html
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