If you want to add support to PRS-500, let me know the version, and I'll post the instructions here. If you have Connect rather than Library, use this file:
http://projects.mobileread.com/reade...te%20Files.zip
*.ttf files go to C:\Program Files\Sony\CONNECT Reader\Data\fonts
kconfig.xml - goes to C:\Program Files\Sony\CONNECT Reader\Data\bin