Replacing portable dvd player with pcdvd rom drive Answered

Sup guys.  I have an audiovox vbp4000 portable dvd player.  The drive reads disks when tore down but not when put together.  It wont eject.  I noticed however that its just a standard pc dvd rom.  I hooked it up to my windows pc and it recognized the drive and i can use it like normal.  So my question is, how can I replace the portable drive with a standard dvd rom drive?  Ive tried simply hooking one up, but no joy.