well, I finally got _something_ up: <http://mywebpages.comcast.net/macdan/opti_upgrades.html> I included G4 PowerBooks infos as well. A big thank you to those who supplied information! If anyone else has a 'Book with an optical drive model I haven't listed I'll be pleased to add them to the page. Info needed is the 'Book model and its mhz speed, and the optical make and model number and its capabilities (eg: DVD/CD-R/W, etc.) Apple System Profiler is the best place to get that info. You can email me offlist at macdan at comcast dot net thanks! I just wish I had more time to work on stuff like this! Dan K PS: last night was a web-page frenzy, added two other pages (of limited interest to the iBook list of course :-) PowerBook Video Display Subsystems <http://mywebpages.comcast.net/macdan/pb_video.html> Big drives in SCSI-based PowerBooks? <http://mywebpages.comcast.net/macdan/pb_scsi_ata.html> ................................. http://macdan.n3.net/ carracho://dankephoto.dhs.org:9700 hotline://dankephoto.dhs.org:9500 .................................