To make sure you can keep track of the fill locations, in hyperspin under the emulator folder, there are different folders with names of systems. Now as for the roms, leave the zipped, but some may need to be unzipped to get to the roms. there will be a set of files, one is roms. Once you unzip them, most of them run as applications but a few of them may need to be installed. For most emulators when you download them, they are in a zip. I have the URLS for all the emulators that I currently use and I trust.