Hi, by the standards of what I've seen here, I'm a computer novice, but probably no less zealous! I've got a few questions: Is this starting a new thread? And, how do I respond to a specific thread? I've got an operating HP7596A, and a parts plotter (not 7596A) that's pretty much picked over,but I wanted to respond to the question/thread about the HP7345A. Thanks for any help.