https://bugs.winehq.org/show_bug.cgi?id=32556
--- Comment #10 from Joe Comfort patcomfort@yahoo.com --- The places were in the registry. I simply did a grep on wineps, found some other locations, and added them to the list. All of the wineps.drv entries in system.reg and user.reg now have wineps16.drv.
On my Windows XP computer, there is a registry block for HKEY_Current_User/Printers. It contains entries for various printers. The block in not present in the Wine registry. I thought of creating one, but the data for the entries are binary and I have no idea how they are created or updated.