Willi, thanks for your reply! The problem is: I do have proper tfm-files, and the font is installed properly (since it works). But given that classical (polytonic) Greek demands some unusual features, I think I will have to adapt the font by hand. On the /showfont map, for example, I can see that a certain "ligature" is in, say, slot 165. Combinations of accents [+ breathing] + vowel are produced by the ligature mechanisms (let's say that's the character for "alpha with acute accent and smooth breathing"). What I would need to do is: 1) tell TeX that the combination ">'a" should be considered a ligature 2) tell my driver that this ligature can be found in slot 165. Feasible? Or am I shooting for the impossible? Well, I got one step further and converted the tfm and vf-files into vp-files that I can read--and maybe edit, if only I knew how... The thing is, the font does work in LaTeX, so it shouldn't be impossible to make it work in ConTeXt, right? Best, Thomas