Basic Snow Leopard install with special customization: setup assistant infinite loop problem.

Question

Hi, all,
Based on this post: https://discussions.apple.com/thread/1395118?start=0&tstart=0, I'm assuming there's a problem with setup assistant running after a customization install reboot.  But I could be wrong.
Here are the details:
MacBook Pro
Clean OS X Snow Leopard install (I was "told" by IT I had to wipe the disk and re-install OS X after backing up personal files).
Installed extras I need/want (in particular, XCode, though I went ahead with the other optional software as well).
Installed the IT supplied "Supplemental CompanyName Installation Disc" (also referred to as "CompanyName Supplemental Installation Disc" ), which is supposed to create a customized, IT supported, setup.
When the supplemental install is done, the system is rebooted.
There is then a "Welcome" screen (starscape, with almost endless bombardment of the word welcome in various languages), finally followed by:
a) select language; b) select keyboard; c) select timezone; d) Don't forget to register your Mac, with a "done" button.
Clicking the "done" button goes to a blank grey screen. and then loops back to redo the "Welcome/language/keyboard/done" sequence, ad nauseum (that is, infinitely repeated).
Per the above mentioned post, I have rebooted to the Install DVD and run disk utility, repairing permissions.  No difference on reboot.
Boot to safe mode goes to the same setup assistant sequence, not a login screen.
Another Mac user here suggested checking for /var/db/.applesetupdone, since missing it, or if it's correupt, could cause this problem.
So I booted to single user and checked for this file.  It is not there.  On the off chance the file is a simple flag and the content doesn't matter,
I did fsck/remount and touch /var/db/.applesetupdone but this did not change anything either.
Presumably, the file must be present and must contain some data.  If this is true, can it be created manually and put in place via single user mode?
Or are there other, better solutions someone could suggest?
Many thanks.
Bob

Answer 1

Ah, it seems I finally found something useful, at http://hintsforums.macworld.com/showthread.php?t=84825
One of the responders supplied the content of their .applesetupdone file.
I was able to get this onto my Mac, in /var/db, as .applesetupdone (just to be safe, I linked that name to .AppleSetupDone, the name as mentioned on the above site).  Note that both names begin with a dot (hidden, in UNIX parlance).
On reboot I was presented with the CompanyName specific login screen.  It took a little bit more mucking around with passwords, but I was eventually able to login without any problem.
Bob