Heya Kiralin7566, this issue is actually with Tcl/Tk (
http://sourceforge.net/projects/tcl), I'm sure I pasted a bug with them about this about a year ago, but for the life of me I can't find the item. alexandernst is correct in that aMSN supports Unicode input/output, however this support is made possible using TclTk, and they sadly don't support direct input on Mac. Please
post a bug report directly with Tcl/Tk and ask them to address this issue.