Is there a way to tell what cable channels you have on Comcast cable tv?

[Sicarius]

I have Comcast Cable on my TV in my room. I know most of the channels I have but my dad recently ordered some movie channels like HBO and stuff and I don't know all the channels I have. Is there a way to tell all the channels you have(that you can watch) on your comcast "box"? I need to know which movie channels I have.

[Ad Bot]

[IkeTheGeneric]

1. Turn channel
2. Find new channels
3. ????
4. Profit

[Caution]

If you have a box, you should have a remote with a "guide" button on it. Otherwise just look up the channel guide on Google, which you should have gotten one of those too.