I downloaded a movie in parts and cannot seem to put them together. There is 16 of them and they don't really have any extension they just end on z01, z02 etc... And the icon picture to the left of the files is just blank. Only the first file out of the bunch seems to have a zip extension. How do I put them all together? Archive Utility is not working and I also tried other utilities like MacHacha. Please help!