The Cutting Edge: COMPUTING / TECHNOLOGY / INNOVATION

America Online

* 3 p.m. Monday: Tony Perkins, a financial columnist for Wired magazine, takes questions in an online chat. Keyword: Centerstage

* 4 p.m. Tuesday: Cardiovascular surgeon Alan Lansing answers questions about heart surgery in an online conference. Keyword: Centerstage

CompuServe

* 5:30 p.m. Thursday: The marketing team from Twentieth Century Fox discusses holiday movie marketing strategies for the Internet. Go CONVENTION

Prodigy/TimesLink

* 4 p.m. Friday: Middleweight champion boxer Roy Jones Jr. will participate in a Prodigy online chat from Madison Square Garden. Jump: CHAT

Internet

* 6 p.m. Friday: KLOS radio station personalities Mark and Brian will host a Christmas show featuring Bob Hope, Mel Torme, Peter Frampton and other celebrity guests. The URL is https://www.markandbrian.com

* At the new Worldwide Music site, you can access and listen to 30-second sound samples from more than 40,000 albums. It’s at https://www.worldwidemusic.com/

* Check out a live shot of the “seismo cam” at KNBC-TV, which is updated every five minutes. The site also contains extensive links to earthquake maps and other seismological information. It’s at https://www.knbc4la.com/seismo/index.html

Sources: Times, wire and company reports