I didn't know printtool existed for Debian, although I did use printtool when I ran Red Hat. For Debian, try running magicfilter. I have an HP DeskJet 812C (the same printer, just a different number painted on) and magicfilter set it up nicely on my Debian potato box.
Make sure you have magicfilter installed (apt-get install magicfilter). You will also need the lpr package installed. When these are in, as root/su, run: /usr/sbin/magicfilterconfig --force and enter the info it asks for. On my system, I have a spool directory of /var/spool/lpd/hpdj812c installed. You may have to create this yourself beforehand. (you can name yours whatever you want, it doesn't have to be hpdj812c. Just remember the name for when you run magicfilterconfig. For your ghostscript filter, choose dj550c. The colors don't print perfectly, but text works fine. There are no perfect drivers for this printer that I know of for colors. For your device path, use /dev/lp0. Good luck! -- James Lindenschmidt [EMAIL PROTECTED]