Sorry is not fully compatible UTF8 ... BUT is support some characters from turkis and german languages. I will look forward to see how SMF is supporting UTF-8 and implementing on my sources.
I hope today I will release 0.2 ...

Regards
Thanks. It would definitely be a plus! It would make your mod international!

SMF RC3 now fully supports utf8.
SMF RC3 has a function to convert everything in the database to utf8, maybe you can start looking there. Also, maybe you can check VBSEO code to see how they do it. See some working examples here: idnforums[dot]com