Star Buck:
There nothing to worry about for the range of VLK. the author might have ramdomly use 500 to 600 to ease the computation to get a key within that range..
Anyway, at least he left the range setting available for all to input their own range..
I've the same though as Satyric0n & rest that the explaination doc is incomplete intentionally.
Seems like someone has managed to find the exact algorithm M$ use for all it product. If it was, such a powerful tool can spell disaster for M$
JMI: BTW, It's a taboo to discuss RE/cracking M$ products here?