Not sure what your level of expertise is, but if, like me a few years ago, are not knowledgable about satellite technology, then look at `What Satellite` magazine where there are many adverts for installers in your area.(or yellow pages). Perhaps there is someone on this site from your area who can advise?
Basically you need a dish, a system to move the dish(either a motor/actuator or an H-H mount), an LNB(the thing that sits in front of the dish and amplifies the signal), cable from the LNB and motor to your receiver, the receiver itself, and then enough time to watch the 500 new channels you can now receive. You also need a site from your house/garden where you have a clear view of the southern sky, and if your dish is greater than 90cm diameter, planning permission from your local council.
Good luck!
Ckrys1