Here are the directions w/ files! This only has support for the FireBox LCD compiled. I have also noticed the interface stats does not work w/ freeBSD. I've got a full install on my pc and it still doesn't pickup the traffic. I have not dug too much into it. At any rate here it is:
(Copy and paste from shell so you can see exactly how I set it up to install)
I should really wrap a cool GUI around this so it can all be configured from the web console. I do know PHP too, just need to find some time.
I'm using the EMBEDDED VERSION! the install script supports that only - if you are using a full install i'd try and comment out the 2 mount commands as you don't need to re-mount the file system as read-write then back to read-only.
Note: the /var/tmp filesystem resides in memory so you can 'play' here without wearing out your CF card.
This is from some PC to put the archive on the pfsense box.
MacWild:final jayson$ ls
lcdd.tar.gz
MacWild:final jayson$ gunzip lcdd.tar.gz
MacWild:final jayson$ scp lcdd.tar root@***.***.***.***:/var/tmp
Password:
lcdd.tar 100% 124KB 124.0KB/s 00:00
MacWild:final jayson$
Now ssh into the box; make sure ya got it enabled first of course

pfsense:/# cd /var/tmp
pfsense:/var/tmp# ls -l
total 126
-rw-r--r-- 1 root wheel 126976 Mar 6 22:30 lcdd.tar
drwxr-xr-x 2 root wheel 512 Mar 6 22:28 vi.recover
pfsense:/var/tmp# tar -xvf lcdd.tar
x lcdd
x lcdd/drivers
x lcdd/lcdd
x lcdd/LCDd.conf
x lcdd/lcdd.sh
x lcdd/lcdproc
x lcdd/drivers/curses.so
x lcdd/drivers/sdeclcd.so
x install-embed.lcdd.sh
pfsense:/var/tmp# chmod 700 install-embed.lcdd.sh
pfsense:/var/tmp# ./install-embed.lcdd.sh
pfsense:/var/tmp# mount
/dev/ufs/pfSense on / (ufs, local, read-only)
devfs on /dev (devfs, local)
/dev/md0 on /tmp (ufs, local)
/dev/md1 on /var (ufs, local)
/dev/ufs/pfSenseCfg on /cf (ufs, local, read-only)
devfs on /var/dhcpd/dev (devfs, local)
pfsense:/var/tmp#
Now you can reboot or just 'cd' over to the run-scripts directory and start it up so you can keep that stellar 'up-time' figure
pfsense:/var/tmp# cd /usr/local/etc/rc.d
pfsense:/usr/local/etc/rc.d# ls
lcdd.sh lighttpd
pfsense:/usr/local/etc/rc.d# ls -la
total 5
drwxr-xr-x 2 root wheel 512 Mar 6 22:31 .
drwxr-xr-x 4 root wheel 512 Feb 24 17:37 ..
-r-xr-xr-x 1 root wheel 174 Mar 6 22:31 lcdd.sh
-r-xr-xr-x 1 root wheel 1184 Sep 11 13:00 lighttpd
pfsense:/usr/local/etc/rc.d# ls
lcdd.sh lighttpd
pfsense:/usr/local/etc/rc.d# ./lcdd.sh
pfsense:/usr/local/etc/rc.d#
The driver currently does not have support for vertical filled histograms - its only a 2x20 LCD so I wrote the horizontal fill functions - I need to finish that but I really didn't need it so I pushed it to the back burner for now.
http://files.pfsense.org/misc/lcdd.tar.gz(Can this file be put on one of the pfSense servers?) -- Thanks! I've updated my url