Someone did point out to me that whilst they give you various angles for the elevation of the dish that would all be assuming you were starting from an absolutely flat level surface.
You'll find the sat meter a great help as it saves a massive amount of time.
Having said that, I found
http://www.dishpointer.com a great resource and it works especially well if you have some landmarks you can work with to give you a bit of a headstart in at least pointing in roughly the right direction.
John