When you first turn on the box, you will go through some initial set up.
You may have to set up the dish type, set up whether you have SWM or Multiswitch. Most of the time the box will see that and automatically populate the fields.
Follow the prompts.
You will have to go through resolution setup. The box will test your display to find compatible resolutions and set those.
Follow the prompts.
The guide data will then download via the Sat feed. This may take a few minutes, there's a progress bar. Don't be concerned it if seems like it's stuck just leave it.
You DO NOT have to have a phone line or Internet connection to do this or any other initial setup
Follow the prompts.
Usually the first channel to appear is 201.
After that you're all set.
Your installer will do all of that. They SHOULD verify that you are receiving all the channels your package has.
Once he/she leaves, you may have to do some adjusting of settings like, changing the resolution you want to display by default, Color of background, Pillar boxes, Audio and of course Favorite channels.
If I forgot a step or two in the above I apologize, I just did this the 2 days ago, so I wrote this from memory.
In all it takes about 10-15 mins, and then you're done.