Saw this over at HaikuZone (thanks Koki). Brazilian developer Gabriel Duarte managed to port the console MSN client gtmess. The initial work was a bit of a pain but he managed to compile it using the GCC4 environment and run it, of which you can see a screenshot over at HaikuZone.
Gabriel plans to keep working on it and possibly add a GUI to it. Gabriel, if you're reading this, how about getting in touch with the IM Kit people? Maybe it would be useful for both? In any case, good job.