I tried the explore idea. It does not work. I know software shouldn't cause a change in hardware. I don't even know if Poser had anything to do with it. It happened when I restarted Windows in Diagnostic mode. I would like to know how Microsoft checks suchs things. It might have just been a weird fluke. I install updates to Windows constantly. I also have a Velocity Micro with a QA6700 processor with a 8800 GTX video card and 2 gigs of memory running XP. The thing ought to install. It just doesn't. It would not install on my wife's Vista machine either. Of course, I did nothing except put the CD in the machine and wait for autorun. I know nothing of Vista and don't want to learn anything about it.