If you're from America, or your starting with a Melee 1.2 ISO as a base, pick NTSC.There are a couple of options depending on what region you are from, NTSC or PAL. Second, scroll to the top of the thread and download the most recent version of the Melee Netplay Community Build. I can't link you to the ISO so please acquire one yourself. First and foremost acquire a fresh Melee NTSC 1.2 ISO.