Getting Free Cable From Cable Modem?

Steve writes: "Hi there, I live in Ottawa, Canada. I get my internet access via a cable modem. However I did not have cable and decided to split the connection onto my TV and got cable tv. Just recently my cable tv, lost 3/4 of the channels. I think the cable company is getting smart. Is there any software to download that will allow me to get these channels back? Is there anything else I can do to get these channels back? Any help will be greatly appreciated."