HELP!! too far to just stop now, extracting prob

i really need someone help in doing this, okay, i got the serial cable, and downloaded jet set radio from one of my games into Tera Term Pro, did all that, then exrtacted the zipped verson of it, now i got track03.iso, and i cant extract it, i tried the dreamrip extraction when i just dragged the file into it, but it didnt save it anywhere, please help a rookie out, anyone