Hi deansoluck, and welcome to the forums! It seems there has been a bit of confusion about this recently. GameEx is designed to be very configurable for the end user. As a result GameEx doesn't have 'default' locations for ROMs and Media because it's presupposed that those locations have been defined by the user. All of this configuration is managed through the Setup Wizard. You'll want to acquaint yourself with the Setup Wizard, Everything that GameEx 'knows' about your own unique setup is managed through the Setup Wizard. Likewise it's important to remember that GameEx is not itself an emulator. For any emulator you set up in GameEx, you'll want to have that emulator running outside of GameEx first (preferably tested via the command line) If you're in the process of setting up MAME in GameEx perhaps this documentation may prove to be of some assistance. Edit: I thought I better mention that the Setup Wizard can be accessed in the following location: Start Menu > All Programs > GameEx > Setup Wizard