How do I reset the shop and dungeons in Bard's Tale?

After searching through my old CDs, I found a version of the game I'd copied to disc right after a fresh install.

It turns out that that the file simply called ITEMS is the one that tracks that data, but you cannot simply delete it, or when you start the game it will ask for the install disk so that it can grab a new copy. The file is modified as you play, so the only way to reset your game is to copy the default ITEMS file over your existing one. If you don't have a default ITEMS file to restore with, it appears that you are out of luck.