A few years ago I created a pod catcher add-in for WHS v.1 called Poca. But with the uncertainty of where Microsoft is going I created a new version of Poca that is not an add-in but is still aimed at the home server market.
Poca Server will run on any Window OS since the introduction of XP. It runs as a Windows Service in the background downloading pod casts from configured RSS Feeds and has a desktop admin tool to manage it. It just stared beta.
Feel free to download it from here