I don't think you're getting it. It can make a dat for roms for you because mame.exe can output the info it needs. It can make a dat for flyers but only if you already have them all. Thus AntoPisa being the author of the flyers dat. You just put the dat in the dats folder, open it in the profiler, set the path in settings and run the scanner and then drop in the new zips into the missing window, basically.