Exporting SQL Server 2005 database to CSV - Columns contain only question marks

I am trying to export a SQL Server 2005 database using ESF Database Migration Toolkit to .CSV, which I can then - hopefully - manipulate enough to create an Import file for importing into WordPress.

However, the current site is in Korean language and shall remain in Korean on the new server running MySQL.

After exporting all of the tables, I am finding columns where I would expect to find "some korean string" to contain "T???? ?????? ?????" - no Korean words in sight! I have tried exporting using ANSI, OEM and UNICODE options in ESF, each provides the same result.

Anyone?