If you have a Dish Network satellite TV receiver, you'll need to connect it to your TV. The type of input required will depend on the model of your receiver and TV. In most cases, you'll need to use an HDMI or composite video input on your TV.
Once you've connected your receiver to your TV, you'll need to perform a channel scan in order to receive channels. To do this, simply press the Menu button on your remote control and navigate to the Settings menu. From there, select the System Setup option and then choose the Installation option. Finally, select the Scan for Channels option and follow the prompts on screen.