In response to the many dvd burner upgrade questions out there... I bought a Sony DW-U14A drive from mwave.com for $140. Yes i know their website is a little *awkward* but the price was awesome. Compatibility: out of the box, none. no problem: i got some modified drivers from here: http://forums.xlr8yourmac.com/actio...onse=answer.faq.lasso&-recordID=34100&-search i installed it in my 400 MHz AGP Graphics machine in 10 minutes no problems. I've burned from iTunes, Toast, the finder, iDVD, just like a superdrive with no problems. I chose this one over the Pioneer 105 drive because of reports that people were having problems with the drive sleeping with disks in it and causing KPs. I highly recommend this burner. If anybody wants any more info, just ask: I spent a lot of time researching before i bought it.