Look for the package apt-sources-list and install it, Mark.
Be sure to make a back-up copy of your PASS credentials.
Neal,
Okay, I'm sitting her ewith a big red face, slapping my forehead! Doh!
You meant for me to open synaptic, reload, and search for "apt-sources-list."
I did and the package came right up.
Okay, now that I'm here, here's my question: I don't believe I acquired this the same way last time. I recall downloading a text file and manually editing my sources.list in root. Why the different method? Or am I mis-remembering incorrectly?

Also, after instlaling the package, the follwoing message came up:
While installing package apt-sources-list-1.0.1-1pclos2012:
warning: /etc/apt/sources.list saved as /etc/apt/sources.list.rpmsave
So, now do I have to do a manual edit to sources.list? or is this merely a backup?
EDIT -- WAIT WAIT WAIT! Again, dummy me! I can see my PASS account has been removed and i have to edit this manually. so, it's a new sources.list and the other is the backup.
Apologies.