Urban Arcana has a load of "new" equipment that wasn't in the original book. I know for a fact that it includes a good selection of archaic weapons and armors (including the ever-elusive lamellar armor). I'm not sure about tools, though. It might be a good place to start, if you don't mind buying a book like that.
I don't know, though. Perhaps I missed the point, and you plan on altering the given DCs to better fit a fantasy setting. If this is the case, I apologize. Mayhap someone else has a better idea. The D20 Modern boards on WOtC's site might offer some help as well.