If you're looking to gain fame in the iTunes Store world, you can submit your own podcast to the iTunes Store—it's easy! Before you begin, make sure that you're using iTunes 4.9 or later, and that you have the URL of the podcast you want to publish handy.
When you're ready, simply click here, and iTunes will take you to the podcast submission page.
Alternatively, you can navigate to the submission page this way:
Note: The iTunes team reviews each podcast submission. Depending on demand, it may take a week or two before your podcast is added.
How to Publish a Podcast on the iTunes Store
Recording Your Podcast in GarageBand
Creating Podcasts with QuickTime 7 Pro