Ok I gonna show you how to get 85+ free channels on your computer.
Requirements:
Windows vista
Media center
Router to connect the xbox 360 with the PC (Your broadband modem should work, just plugin both your PC and xbox)
TVTonicFirst, you need to setup mediacenter on both the PC and in the xbox 360. There probably is a manual somewhere for you who are afraid of exploring the settings (Yeh it's easy installable).
Then, you need to install TVTonic, start mediacenter on both the PC and xbox. Now in the xbox, go to "app browser", and choose TVTonic.
Only the "Extender compatible" channels will work.
First, go to settings and turn on the advanced extender setting. Then, open the channel guide (Browse guide). Choose "Extender compatible" and add your channels.