Do you need to point your antenna to a satellite?
This application is all what you need, just enter your position, the position of the satellite you want to receive, and the application will calculate the azimuth and the elevation of your antenna. It will also provide you with the LNB skew.
Now if you have an iPhone with GPS you can get your position ina few seconds, just pressing a button. If you don't have GPS coverage, you can also get your position if you have Internet connection
For iPod users you can get your position if you have Internet connectivity.