What satellite are you pointing to?
Go here: http://www.galaxy-marketing.com/align.htm choose the satellite you want to point to and type in your zip code. Your Azimuth, Elevation, and Polarization will be shown below the map.
Just make sure you get a good installers. Installers that charge a good ammount of money will usually do what it takes. :up
You may want to go to Local Satellite Installers