MAP files will only display the roms listed in the MAP file. So since that MAP file was filtered, it will only display those 30. If you want the MAP file for a full set then they can be found in the stickied submission thread. Also there is a link to my posts in my signature. As far as MAP files for Nintendo and Atari, they are not really necessary. How are you rom names coming up short? Please give more detail. If you just want to show all your roms in the list then just let GameEx generate the MAP file for you. If you want a filtered listing (e.g. region, language, no clones, etc.) then that's where a MAP file would be useful. If you want something within that scope then let me know. Now for ZiNc. That really depends on you. I have them setup both ways for reason of support here in the forums. The easiest method is to use the GameEx integration. GameEx does a wonderful job of integrating ZiNc. It really would be system dependant in that case for some roms. However, many of the same roms are listed as imperfect in MAME which is why there is the option of using ZiNc to run them in GameEx instead of MAME.