I have seen this before. It normally happens when some A$$hole thinks its funny to plant a file in a zip file that has nonstandard characters. They are ASCII characters that windows can't show without a add on. And even than its a real pain to get rid of the file. It’s normally the way some hacker groups "tag" a machine to show that they were able to get to a machine.
The fastest way to get rid of it is to copy the stuff you want to keep off the drive and than format it.
http://en.wikipedia.org/wiki/UnicodeInfo on Unicode....
You can try to install a unicode text editor and sometimes it will let windows show the file name.
