Displaying Greek characters

[Merciadri Luca]

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Hi folks,

I received an answer on linux.debian.user, and the sender had typeset
its Greek name in Greek. It results in lots of small squares in Gnus,
at the place of its name.

Is there some LISP code which could help displaying this?
If so, what can I do?

Thanks.

(P.S.: Yes, I am still using the old, deprecated, etc., Mailcrypt: I
did not have time to use something else, but I kept all your tips.)
- -- 
Merciadri Luca
See http://www.student.montefiore.ulg.ac.be/~merciadri/
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