I believe, installing a lot of Cams will not give the encrypted channels. Cam (which emulate the real cards) will be useful only if there are Keys to put in or Card Sharing is available. I don't think you will get much luck in KSA in these two areas or it may be risky.
More importantly, do you have the Dish aligned for Nilesat and Hotbirds? This is the first thing to be done.
Pli image comes with Cccam. You may try this. Or install Cccam seperately on your Dreambox, if possible.