problem displaying greek text in mobipocket for palm

[sapient]

I am having problems getting mobipocket reader to display greek text on my palm. I have a correctly encoded .mobi book in greek, that displays correctly in "kindle for pc". However in mobipocket on my palm TX, I only get little dots instead of letters. I tried making a greek font for isilo (which btw displays greek text just fine) and then converting the font to mobipocket format using fontcollector, but I still get dots instead of letters, just different sized now. Any help?