T&T: Direct TV Sat Change?

[Tom Wadsworth]

Hi Doc,
My name is Tom Wadsworth and I have a trawler on the upper Chesapeake Bay.
I would like to pick your brain for a minute if you do not mind.

The boat has a KVH C3 satellite dish that I would like to get working; 
the boat and KVH are a year old.
I have talked to Direct TV and KVH and mostly get a headache.
I live north of Philadelphia about 100 miles from the boat.
It sounds to me as if I could just get Direct TV here at the house and 
take a box down to the boat.
I am not really too picky about 'which' local channels I get, just 
something.
I have been told that there might be some compatibility problems with 
the C3 and Direct TV but from what you are saying, this is not an issue?
Last thing, do you have any experience with the Direct TV internet service?

Thank you for your help
Best Regards
Tom Wadsworth
Mai Pehn Rai
(Means: "Don't worry, Be happy")