You need to be more specific about which channels you want.
Some are free to air on multiple satellites (eg CNN)
Some are free to air on single satellites (eg Fox Sports at 43W)
Some are NTSC so you need a particular receiver to get a picture
Some are encypted so you need subscriptions and special equipment (but there are different formats in use so again there's no single answer as to which equipment you need)
Some are on satellites not visible at all in Europe (I assume you are in Europe).
Some are combinations of the above...