Good news :) I solved the Problem. You have to add custom fonts to the following registry entry: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Fonts] You don't even need to convert the .fon files to .dbf or .pcf files. Just add the name of your font and the path to it as a key. I guess this is something that should be entered into the wine wiki because i couldn't find a single line about this registry entry when i searched on google.