I will be very interested to hear your results...I went through the same thing, and learned that I had to start Cakewalk in <Run as Administrator> mode for the reg code to work. I still haven't been able to get a full load of samples, however. I get lots of .sz not found when I'm running DP. The files are missing but the shortcuts in the DP browser are there. Very frustrating...only maybe 10-15% of the voices work, even in the Extra packs...