Nedanstående är saxat från Dreamboxx.nu
Har själv inte testat om det funkar, ge gärna lite feed back om ni får det att fungera.
If you have a boxkey like this 01583426371, the first thing to do is to take away the first and last digit so it looks like this 158342637, it should now contain 9 digits.
Then convert it in your favorite calculator, e.g. windows, put the 9 digits in the calculator and shift to Hex and out should come: 9701DED
But it should be 8 digits in the NewCS config so just put a zero in the beginning like this 09701DED
Done, and away you are!