There are two fixes out there for this problem ... if you read through older posts, it has been mentioned a few times now.
First - check out this help forum:
http://support.apple.com/kb/TS2372?viewlocale=en_US
That's for the Vista problem of the registery.
Otherwise, here's another fix if you had the same problem that my system had with the recent Verion 8 upgrade - a Gear driver failed to install, which meant that my iTunes could not detect any burning software. Here's the fix:
1. Navigate to C:\Documents And Settings\All Users\Application Data and look for an alphanumerically named folder containing an '
x86' subfolder. Can be called {3276BE95
AF08_429F_A64FCA64CB79BCF6} but it might change from system to system. You may need to do an ADVANCED SEARCH to find this folder as it is a HIDDEN file.
2. Copy this folder to the Desktop.
3. Open the copied folder on the Desktop, open the x86 sub-folder (Setup Information), right-click the GearAspiWDM.inf file and choose
Install.
4. Reboot.
5. Run iTunes and hope that the drivers have installed correctly.
As I said, there's no guarantee this will work for anybody else but it worked for me and I had tried just about every "solution" as posted in the various forums. On the surface it looks to have been a simple case of the installer copying the Gear install files to the All Users subfolder, but then not actually running the install.
Good luck!
