If you use Skype for recording phone calls or interviews (or like me, your podcasting partner is on the opposite coast), I can not recommend this tutorial strongly enough. It’s from the guys at The Conversations Network, and it gets into some of the more technical aspects of improving your Skype recordings. Don’t worry, it’s not too technical, and once you have used some of their techniques, you won’t have to do it again:
http://www.blogarithms.com/index.php/archives/2007/12/23/skype-for-interviews/