Sadly this requires hex-editing. It does tell you how to get iPHUC working on XP, though.
I've researched DMG file editors, and I'll be giving those a try this evening when I get home. I hope to make it easy for us to install Nullriver's App.Installer and/or SSH on a jailbroken touch.
Run in ph33r, Apple. Soon everyone in the world will be able to unlock their Touch.