Thanks for the responses; yeah I'm sure about the 'games update', I've had some version of trackir for years and understand how that part works. It did take me a minute to remember BI's policy to disable trackir by default but I have that covered. I think it's something like toby23's suggesting--just haven't figured out the right uninstall, re-install, clear the registry, delete old profiles, run around in circles and perform a magic happy dance sequence to get it working yet. I'll keep trying!