Getting spammed in Greek

I got on someone’s mailing list and I’m getting all this junk in some language that I don’t recognize. Looks like this: Американское. I have tried to use key word filters in Outlook Express (Windows XP Home) to catch this crap. I copy one of the words and insert it into a message rule. Outlook doesn’t recognize the word and just shows “???” after the rule is logged. Any suggestions on how to filter this stuff out?