I read your post and no "quoted" error message as well as details about if the user that is logged in is "limited" or "administrative"
Details can help others help you out.
ok heres my problem, so i have done everything starting from the regedit to the hkey local system and so on and i have got to the .cdda file and openwithlist and openwithprogids. and i set them to full access, but when i try to download itunes, it still says error and that openwithlists still cannot be open and i need access. have i done something worng? im really confused and frustrated. if anyone has the slightest idea what i can do to make this work it would be greatly appreciated.