I am running machines with Windows 7 SP1 and Internet Explorer 9. When I go to apple.com/trailers and try to view a trailer, IE displays a "QuickTime question mark" and does not display the trailer. I have verified that QuickTime 7.71 is installed. I have tried uninstalling, repairing, etc. QuickTime all to no avail. If I put the Windows user into the "Administrators" group, the QuickTime problem goes away- that is I can view QuickTime movies at apple.com/trailers and other sites with no problem. It is only when the Windows user is in the "User" group that the problem exists. I cannot put the users into the "Administrators" group and need a way for users with "User" level privileges to view QuickTime movies. Any idea how I can accomplish this?