VFP is not a unicode application. So you cannot see Greek characters on VFP just install a greek font.
if you are using windows xp/2000:

go control panel;
regional and language options,
advanced,
language for non-unicode programs,
select greek.
after you have to restart your windows.

that's okey.

but if you are using windows 98 unfortunately you have to reinstall windows and during installation you have to select greek.