My G4-466 (no DVD) presently has OS 9.1.1. I purchased OS 10.3 on eBay, and although the seller told me Panther was on CDs, I find the disks are DVDs and labeled iMac. Looking forward to Tiger, etc, I bought a DVD burner. My G4 "sees" the DVD burner, and will handle CDs. How do I get it to operate with DVDs?