On Macintosh systems you need to go into the "Chooser" (under the Apple Menu in the menu bar) and select the icon for that printer. If there is a selection in the dialogue box for "Setup" it wouldn't hurt to click that as well and follow whatever prompts you get.
Sometimes it seems the computer just has to go through a routine like this, usually just once if you don't change your printer selection, so that it recognizes the printer.
I don't know the steps for a Windows system but I suspect that it is a similar process of identifying the printer for the computer so it knows it is there.[This message was edited by Mark Herrick on 10 July 2000 at 01:52 PM.]