The TechZone has posted a Step-by-Step Guide to Making and Promoting Your Own Podcast
Think of it like an audio blog; a podcast is a recorded program similar to radio (sans commercials, of course) made available via MP3 files on websites or RSS feeds. But unlike radio, users can download these programs onto an Apple iPod or any other MP3 device and listen at their own convenience. Also unlike radio, there are no FCC standards to regulate the content; a podcast can say anything about any topic at any time. It's revolutionary, really. Read on over here.