Check out the new multi-language dictionary at the bottom of this page which of course includes Greek to English and English to Greek word translations.

 

I just purchased a new, talking Greek/English dictionary-translator-phrase book.  It's rather expensive ($490 w/3 year extended warranty) but worth having while in Greece.  It's small and compact, has a color screen, and does all kinds of useful things like currency conversion, world time, etc. and I find the speaking/voice function a must for me.....