Tonight’s broadcast of The Mac Night Owl LIVE, a radio show hosted by technology journalist and author Gene Steinberg, features Greg Joswiak, Apple’s vice president of Hardware Product Marketing, who will be discussing the newest revisions of the iBook and PowerBook G4 lines. The show will also feature Ryan Rempel, author of XPostFacto, a utility that allows users to install Mac OS X on older Mac hardware. The show can be heard every Friday at 9:00 PM ET.