Give the guy a chance its not that hard to do,and it’s one of the best ways to learn.
The cabling from the dish to the box is similar to old coax cabling the only difference you use f type connectors on the ends.
http://www.maplin.co.uk/Module.aspx?...rew-On%20Plugs
As for changing the satellite you will need to move the dish to the correct one.
The easiest way of doing that it is to connect every thing up then get someone to watch the signal strength screen on the services menu on the sky box then you move the dish until you get a good quality signal.