Computer boots to black and white Darwin/BSD Screen

My iMac is running 10.4.11. While trying to edit user permissions for local networking, I made a huge mistake. I started changing a permission and realized in the middle that I had messed up. I quickly reset the launcher, and then reset the computer. when the computer was rebooting, It went directly to the darwin screen (black background white letters). I found a thread that gave me hope but ultimately did not solve the problem.
Booting to Darwin/BSD Screen (this is the like to the entire thread)
every thing worked as the article said it would until the end...
"Start up in Single User Mode and type carefully:
/sbin/fsck -y
Repeat the above until it says your disk is OK. Then:
/sbin/mount -uw /
cd /var/db/netinfo
mv local.nidb/ local.nidb.bad
ls -ln /Users
This last command will give you one line for each user, plus one for the "Shared" directory, which doesn't interest us. Each user will have a line like one of these:
<pre>
drwxr-xr-x 20 501 501 680 Jul 16 14:32 D. A. Hankerson
drwx------  8 501 80  272 Jul 17 19:18 D.A. Hankerson
</pre>The second numeric field (501, 500) is the user ID (UID) and you need to list the uids against the shortname s given in the final column. Make sure you get the name right for UID 501! Then continue with
reboot
When you restart, you should get the Setup Assistant, just as if it was a new machine. You will be prompted for all of your user information. Be careful to use the same short name as previously for user 501." kind of confusing where to retype the user short name... in darwin or setup assistant
I followed all the steps then completed the Setup Assistant and just when it looked like problem solved, I was still sent back to the darwin screen.
Following the setup assistant only made more user accounts. the setup also would not allow me to input "." and " " (periods and spaces) as the article says.
Please help!
*Green text represents information specific to my machine.

While in the B/W desktop go to the System/Accessability preference pane and check to see if this checkbox is selected:
If it isn't toggle it on and then off again and see if there's any change.

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