OK. I should have been a bit more specific. Rather than asking for a place to buy DIP switches, I should have asked: "Does anybody know an exact DIP switch unit that is 100% compatible with the HHKB Pro 2?"
I do want to get a teensy, but I think I want to use the teensy externally, since I like the usb hub to connect a mouse. I was hoping to find a nice casing for the teensy, so that it will just look like it's part of the keyboard cord. If anybody knows of such a casing, I would be very thankful for any links to a store that sells them.