More HX-20 questions

Hello, I picked up an HX-20 years ago, and have finally some time to play with it. I have a couple questions that perhaps one of you others out there with an HX-20 could answer. HX-20 Background: Cream Color, Cassette Module, NO 16K expansion, HP HEDS-3000 barcode reader, barcode ROM installed, labeled in Pen BARCODE Z. Everything seems to work fine. I am trying to get the BARCODE ROM loaded. I have read all the EPSON docs on their support site. Have not been able to locate a BASIC tutorial online though. Questions: 1) Should the installed ROM (NOT a module but inside the HX-20) show up automagically in the menu? 2) If not, how to I go about loading it into memory? 3) Thoughts on the easiest way to interface the HX-20 to a Win box or anyone tried a terminal program and a Palm? TIA ChriS