I'm very new to mame. I found this frontend and I love it. I have bunch of games that I run with mame32 118, but I run killer instinct on mame32 103 since it doesn't run well with 118. I set up GameEX with 118. Of course some don't run in 103 so I'm stuck with using 118. From searching and reading this forum, I gathered that I just need to set up 103 version as another emu, so I tried to go through setup wizard and used custom setup>clicked Emulation Selection and Emulation Setup as one of you posted (sorry I don't remember whom the credit is due). I'm clueless with command line stuff, so I set up working path to c:\mame32u103 and rom path to c:\mame32u103\roms since that's where my mame32 103 and roms are (actually kinst rom is in C:\mame32u103\roms\kinst. This folder contains kinst roms and chd file). I entered mame32.exe into command line. Both start page name and title text were set to "Killer instinct", so when I launch GameEX, it does show up under emulated games. When I click on play this game, the screen goes blank and nothing happens. I hit esc and it registers as being played. I'm clueless, so I'm sure I'm missing something obvious. Your help is greatly appreciated, especially some step by step instructions. Everyone has to start somewhere, and I'm excited to learning this great frontend. Thanks.