TSGL: Computer and Printer not communicating

[Mike Ferrell]

I was out of town for a couple weeks and since returning I am unable to print with my old 3-in-one HP OfficeJet T45 printer purchased in 1999.  The tray icon says "disconnected" and the set-up communication test fails.  I tried deleting and reinstalling the driver.  It was previously downloaded from the HP website because the old driver does not work since I switched from Windows 98 to XP a few years ago.  I also tried a different cable.  The printer is turned on and everything is plugged up properly.  Any ideas?
Mike Ferrell