Well, I may or may not have the correct drivers, but when I used the synaptic package manager to "completely remove the driver" it failed to remove the common file. I know this because when I tried to re-install using rmp -Uvh *.rpm it report the common file was already installed. I replaced the "usr/lib/cups/filter/pstocanonij by copying it from my live CD, but now the printer is not printing at all.