I have a Dual 2 GHz G5, about two years old, running MacOS 10.3.9 with 2GB RAM. I would like to upgrade the dvd writer to a dual layer device. I have a Pioneer DVR-R100 available, which is 8x dual layer writer, 16x for single dvd, and 40x for cd. I have read through a fair number of references to Pioneer DVD devices but nothing specific for DVR-R100. The box doesn't indicate support for MacOS, which tells the story but then sometimes the box doesn't tell the whole story. Do I need to upgrade any os or firmware to support the dual layer device? Does anyone know if the DVR-R100 will work? If not, can someone recommend a dual layer device that is compatible? TIA, Mark Phillips Mophilly & Associates On the web at http://www.mophilly.com On the phone at 619 444-9210