pkg_add cups gtk+2-cups foo2zjs, run cupsd, connect to http://localhost:631/ and add the printer. But, I wanted to take away my need for CUPS and not have to deal with the stupid "Firefox 3 can only print once to CUPS" bug.
So, I took the time this afternoon to make foo2zjs work through the OpenBSD stock lpd and foomatic-rip.
In short, I copied and gunzipped the PPD file from /usr/local/share/foo2zjs/db/source/PPD into /etc/foomatic as the name of my printer. I then updated my /etc/printcap and started lpd.
lp|2600n|HP Color LaserJet 2600n:\ :email@example.com:\ :af=/etc/foomatic/2600n.ppd:\ :if=/usr/local/bin/foomatic-rip:\ :sd=/var/spool/output:\ :lf=/var/log/lpd-errs:\ :sh:
lpd_flags="-s"to my /etc/rc.conf.local.
I ran the following commands to copy the PPD file:
$ cd /etc/foomatic $ sudo cp /usr/local/share/foo2zjs/db/source/PPD/HP-Color_LaserJet_2600n.ppd.gz 2600n.ppd.gz $ sudo gunzip 2600n.ppd.gz
Thanks to Darrin Chandler's Printing on OpenBSD II page for some guidance.