Hmmm.... So it seems that CL's claims of 'If you don't change the drive, you don't need another challenge code' aren't true. At least, untrue if you shift the drive to another machine. Pity. It seemed like an easy way to keep all my poser stuff in one place and carry it with me as I changed machines. But it appears that the code is tied to the the registry in some way. Oh well, I'll still do it, although I may wait till I have the new machine before I install. I'm in no hurry to use p5. In fact, the only thing in it that interests me is the cloth room. I just know though, that the way things go with me, I'll have moved machines or had to reformat at least 3 times in the next year. I can't even remember how many times I've re-installed poser 4. At that point, I'll just hassle the life out of CL for more codes. What can I say? Life's a bitch and then you buy Poser 5. mac