To add to the above tutorial.
1. Edit cccam.cfg in HDVB folder with your sever details. Once you've done that you need to make sure you add a 1 at the end else the software won't recognise your sever.
2. Load HDVB and set the correct config setting as shown below by clicking on the config button on the right.
3. Next click on open comport make sure the receiver is on standby before doing so. Once you've pressed the open comport button you can go the channels you want to clear.
4. Thats all there is to it. Click on cccam tab to view your sever details etc if you want to.
Note: it can take up to 5 seconds between channel change for it to open the channel also this software should work on Gbox as well but I've not tested it.