Zetpap: no, it means that you can use any font which is properly
installed, TrueType in PSFonts or Type 1 in Windows\Fonts.
Window installs automatically plenty TrueType fonts,
e.g. Arial, Verdana, Times, Courier, Symbol ...
A few are not directly accessible in PhS like MS Sans Serif,
these are system fonts for the operating system.
All the others SHOULD be listed in the text tool control box in PhS,
and here it works. Therefore my recommenation for Greeks
by Symbol, if only one font is required.
Sorry, I don´t know what´s wrong in your system. ---Gernot