Q: I'm trying to read the "datebook.dat", "address.dat", "todo.dat" or "memopad.dat" files created by the HotSync desktop tool, but it doesn't work. A: Those files aren't PDB files, so these modules can't read them. It looks as if the HotSync conduits don't store a backup PDB file of the database. In any case, I don't know what format those files are in. http://web.archive.org/web/20050718081526/http://www.geocities.com/Heartland/Acres/3216/palmrecs.htm appears to have information about the file formats used by HotSync. The Pilot:: Perl package by John Wiegley might also prove useful. See: https://metacpan.org/release/Pilot