Main parts you will need for a basic set up:
Satellite dish (the bigger the better in my opinion, max legal size without planning consent is 90cm)
MultiSat receiver (Preferably one with CI slots on it, this will allow you to open it up a bit)
Universal LNB, you can pick up some cheap 0.6dB minimum though preferably 0.3dB.
Obviously cables, connectors, and some bracket for the dish.
If you wanna get a bit more technical you could opt for:
Motor mount for the dish (Saves on manually aligning it)
CAM (Some generic cam like the XCam, depending on what you wanna watch)
Blank Programmable cards (to add channel keys on to, some cams dont need this)
Card programmer (to put codes on to the cards)
My main setup is:
ISS 85cm Dish from
http://www.brymar.co.uk/
Moteck SG2100 Motor from
http://www.turbosat.com/
Golden Interstar universal LNB which I got from ebay
Technomate 5500CI Plus receiver which I got from ebay
I dont have any CAMs, did have but now I dont.
Really its a case of doing your research to what equipment is the best to buy, but my setup seems to work well and the receiver gets a good write up with most people. Obviously most people will say that the equipment they have is the best, but I went for the more cheap route than the best most expensive stuff.