Hello, we have an old HP Designjet 30n, with no CD rom or programs for it. We are in the process of trying to get into it and reset is IP address. There is a very small LCD screen on the front. We have tried holding in the power button in the front for 30 seconds on start up, but no dice. (Standard IP address reset on start up for HP) Network card is good, and connection light is green. Anyone have one of these old dinosaurs? Printer is dis-continuted, HP does not suppport anymore.