Hi. You don't have to have an interface to program it. You can program the machine directly. If you want an interface, you'll have to see a local dealer.
if you want to program it from the register's own keyboard, there is an operting / programming manual here:
http://the-checkout-tech.com/manuals/TOC/cashregisters/TEC/MA-1350%20owners%20programming.TOC.pdf
Registerman, September 2010