There is allot more to it, You need an ISP,You need to register, you need to find out is your
equipment compatible, in other words is the LNB(low noise block) or LNA(low noise amplifier)
within the Frequency range that the ISP is receiving. C-Band just means the Frequency range is between 4 (RX) and 6(TX) Giga Hertz.Each ISP
has an out bound (ISP -TX)and an In bound (RX) frequency that is assigned to them by the owner of the Satellite that they are working on, or by the company that is selling the band width to your ISP. There is also two basic products on the market, One is to surve via modem and RX via your Dish, and the other is to TX and RX via satellite, without using a modem.
I do Satellite communication for a living, so feel free to give me a call +27827749405