Tonight on the Tech Night Owl LIVE--David Pogue, Marc Horne of Quark, Ryan Rempel and Eliot Van Buskirk

Co-hosts Gene and Grayson Steinberg will welcome David Pogue, tech columnist for The New York Times and author of numerous books, such as Mac OS X: The Missing Manual. Marc Horne, of Quark Inc., will preview QuarkXPress 7.0 and Ryan Rempel will demonstrate how you can run Mac OS X Tiger on older Macs with the latest version of XPostFacto. You'll also get an update on Apple's digital music business from Eliot Van Buskirk of mp3.com. Tune in the internet radio show tonight from 6:00 to 8:00 PM Pacific, 9:00 to 11:00 PM Eastern.