First of all you
DON'T need an iPod although that is where podcasting gets it's name. What you do need is a piece of software called a podcast receiver. Some of the most commonly used podcast receivers appear below.
iTunes: the
#1 music download store and jukebox software, now makes podcasting as easy as iPod..
iPodder: iPodder is free and works with
Windows XP, Mac OSX, and Linux.
iPodderX: iPodderX is designed for the
Mac. There is a "Lite" version which is free as well as a premium version available for a fee.