I have a Windows 7 PC hooked to an HDTV via HDMI. Connected to the PC are a CableCARD tuner and a tuning adapter, each via separate USB ports.
While going through the TV Signal setup in Windows Media Center I get stopped here:

I called the cable company, hoping they would have one. Now, I don't want to confuse matters even more, but after explaining what I was looking at, the tech told me to give him my Host ID and then we would be able to get past this. I was under the impression that he would enter the Host ID somewhere, and then I just wouldn't see this screen anymore.
He told me to look on my CableCARD tuner, it's not there.
So, what are these two items I'm being asked for?