Cable Card / Activation

I have my new Roamio up and running and need to activate the calling card. I've already wasted several hours on the phone w/ Comcast. My local Comcast says the card is already activated, the 800-Comcast clowns say they're unable to "Register" or "Add" the card to my account.



Now I'm wondering if maybe I'm not getting a video signal over the coax. Should I be seeing the standard non-encrypted channels without the cable card?



Please help me retain the small bit of sanity I have left....



Thanks in advance,

F