Can't get HP Deskjet 1220C to print in color in Snow Leopard
Just got an iMac with Snow Leopard. Former iMac was Leopard. New iMac prints fine to old HP LaserJet 4050 but just can't get color output from HP DeskJet 1220C. The iMac apparently did not find any drivers built into Snow Leopard, so I downloaded Apple's HP drivers (HPprinterdrivers2.6.dmg) and on installation kept getting the error message about "/System/Library/Extensions/hpPlugInInit.kext was installed improperly and cannot be used." Read in discussions here to delete the .kext file but couldn't find any files containing 'kext.' Tried printing, still no color. So I downloaded the driver package a second time, same error message (over and over), and still no color ink. Next I deleted the printer and added it, still no color. Then I reset the printing system in System Preferences, turned the printer off and back on again, still no color. Ink supply is fine. I'm out of ideas. Help?!
iMac, Mac OS X (10.6.7)