So... I think I got somewhere now with the explanations from you and mathew. It seems that the problem were the missing .afm files (as mtxrun wanted those, not .pfm nor .pfb). I found two different solutions A and B: (1) Install fonts (.pfm) in Windows (2A) Put .afm files to C:\Windows\Fonts (2B) Put the complete rsfs (containing the .afm and all the other stuff) directory to texmf-fonts\fonts (3) Run "mtxrun --script fonts --reload" (4) Running "mtxrun --script fonts --list --all --pattern=rsfs" shows the fonts (Note the "--all", otherwise only one is printed) There are two things now, that are somehow strange to me: - In both versions, step (1) seems to be mandatory. I would expect, that the rsfs directory in texmf-fonts\fonts should be enough, as mtxrun clearly searches there and all the files are there, too. I don't understand the problem here. - If the .pfm and .pfb files are sufficient for Windows, why does mtxrun specifically search for .afm files and not also for .pfm? Anyhow, the fonts are finally listed/recognized by mtxrun. Unfortunately, the example at http://archive.contextgarden.net/message/20100414.122529.bc3ba584.en.html still doesn't show me the rsfs font, only a default font. Probably I just have to look into that (and the example from mathew) tomorrow. Best regards and thanks so far, Stefan.