Pasting Greek Characters into screens/datafiles

Forgive my ignorance, but multi-language is not my forte.

I've been asked for functionality that allows the keying in, displaying,
storing, and printing of documents which need to contain Greek characters,
in addition to English characters. Everything we've done in the past is in
English. I've code the appropriate physical/display/print files, using
"Open" type for those fields that may contain multiple languages. (Yes, I
understand Open wasn't necessarily required, but what the heck.) I have a
Word document that contains some constants that I need to either hard-code
into display/print files, or enter into a physical file. Whenever I try to
paste these characters in, all I get on the green screen is ??????.

Greek is installed on the iSeries, plus my iSeries Access has all the Greek
components installed. I even have Greek enabled on my Windows XP
environment. I've tried all sorts of variations, including changing my
interactive job to Greek, etc. But I'm not getting the mix right.

What do I need to do to enable pasting in these Greek characters/words into
my green screen?

Thanks!
Brian Johnson