Hmmm. Not so fast...
I just went to this website:
http://www.whereisip.net/
Under Country/Region, it says "Anonymous Proxy".
If I go to Yahoo! Location, it shows me in Overland Park, KS.
So perhaps CBS is just shutting me out because they see me as an anonymous proxy. I think that must be new, since I've been able to access them before.
I wonder if there's a setting with my VPN that I can change.