According to vueScan, printers that have internal parallel-USB converters are not supported, Your HP 4200c would be one (not supported). the scanner that replaced your 4200c, (the 3500)is supported, but drivers don't seem to be very complete for 10.2. According to HP website, the only scanner that is directly supported with OS X 10.2 with real HP drivers is the 5400 series, although some others are 'under development'