This is the Dreambox 500 forum. I don't have a 500. I have a 7025 and a couple of Mutant 200S. But CCcam seems to be the same whatever your hardware.
In all cases, CCcam is one of the options in the add-ons menu (on the 7025, it's part of Gemini's Blue Panel), so I keep it updated that way. I do change the CCcam.cfg a bit, but only for c**d sh**ing. For a single Sky card, on every box I've tried it on, it reads a Sky card straight "out of the box".
Because I've come to Dreamboxes through Linux rather than the other way round, I tend to do my file editing manually in a Telnet session.
In fact with CCcam you don't need any editing for any channels, even the premium channels (Sports and Movies) which only work in the married Sky box.
For the "six mixes" a Sky card will work in any Sky Digibox. Therefore CCcam doesn't have to present it with any specific box number.
For Sports and Movies, a Sky card only works in the box to which it is paired ("married"). CCcam can extract the necessary information from the card and make it think it's in the right box.
You may have gathered I'm quite a fan of CCcam when it comes to Sky cards (which are my main area of interest and activity) and you'd be right!
Hope this helps.