I remember posting it sometime ago in some other thread, but here it is again (sorry for duplication).
For getting CBN while with Rogers, you *must* have ATN (hindi). That by itself costs $15/month I believe. CBN can then be added on to it for another $7 or 8 I think. It's a month-to-month subscription for these additional channels. So total you're done for less than $30 for CT.
If you don't have Rogers, you might not get it before CT starts. They're sometimes extremely slow, and will get you hoocked up in 2/3 days. But its always better to check with them first.
If you're with Bell, I'm not sure what the procedure is. But I would assume it's similar to the rates at Rogers.