My DirecTV receivers have an antenna alignment page that shows the azimuth and elevation by zip code or lat/long. The data base is stored in the receiver, so you don't need to connect to anything to see it.
Also, if you have the azimuth and elevation settings for any given location (lat/ling), it's pretty simple math to calculate the numbers for a different location within a a few hundred miles. Basically, you need to add or subtract the lat/long differences from the elevation and azmuth numers respectivley. In other words, if you travel 1 degree north in latitude, you need to drop the elevation of the antenna by 1 degree. East/West correction depends on which side of the satellite you are on.