Texha79, I registered here because your post was incredibly helpful to my desperate situation. I thank you very much.

My remote indeed needed to be unlocked with a three digit code (982),
I was expecting a five digit code, however the unlock code worked.

The correct code for the CABLE button was a five digit code (01376).
My equipment:
Comcast's dark platinum dark silver remote & Motorola dct700 cable box.

Thanks again.