Well I picked up a Cendyne (Pioneer) DVR-105 at Staples because they had one there. I've got 14 days to decide if I should try to get it in my G4 iMac flat panel or take it back. I've seen the take-apart article at xlr8yourmac.com, and it doesn't look very challenging. Other than voiding my warranty, are there any repercussions I'm not thinking about? I'm using 10.2.3 with an 800 mhz iMac. Will it be recognized immediately? Do I need to stop using the DVD-R's I'm using now and use only 4x media? The box does not at all mention Mac compatability.Only Windoze. Should that worry me? This is not a have-to upgrade for me, but it would be nice to halve the time it takes to burn a DVD. Any help is appreciated. Thanks. Geno