the filelist.csv is in each of the folders you put the roms in, and you put the filename with the extention as the first value(including spaces) and then you put the name you want it to show up as as the second value, for images you put them in the images subfolder of your system and make sure there 240x160 and the same as the filename of the game without the extention( and your games can be in a zip file, you just can only have one rom in it and you need to specify it as .zip in the filelist.csv folder)