I'm using the HP1006 printer under XP - using the standard HP printer driver, look in Control Panel (depending on your OS, it might be something else), click on "Printer Preferences", and on the "Paper/Quality" tab, in the lower right section, there should be a "Print Quality" selection - there it should have "FastRes 1200", or 600dpi, with a check box below that says "EconoMode" option.
Good luck, Ken H>