Quicktime Player Settings with Mandatory Profiles

Greeings, not sure if this should be with server or XP group, but here goes.

I have Quicktime player installed on XP Pro machines. Latest SPacks and
updates applied. In Win2003Domain, and users have mandatory profiles and run
at user level. Problem is getting Quicktime settings ( in the Quicktime
applet in control panel ..ver is 7.3 or thereabouts ) to stick. For example
if I open up the Quicktime Applet in control panel, and want to uncheck Play
Movies automatically or set Mime settings so that Quicktime is default MP3
player, I can check and uncheck these settings, however when I close the
applet, the settings are lost.

I need to find a way to get these settings to stick, not for the user, but
for me as domain admin. The only way I have found to make them stick, is to
temporarily make the Domain Users administrators on a workstation, start the
Quicktime applet, make the changes, logoff and remove domain users from
Workstation administrators group. I could spend the next week doing this but
I think there must be a better way...

I am trying to find out where these settings are saved so that I can apply
them to the users mandatory profile, but have come up against a brick wall.

I have tried:
Registry -- setting all Apple and Quicktime locations I could find to Users
Full Control
Local Settings\Application Data\Quicktime - Users full control
Application Data\Quicktime - Users full control
Setting the Quicktime and Apple folders to Users\Change permission in
Program Files
I have also tried copying profiles that did work on the workstaion to the
server and making them manadatory profiles that are called by user accounts,
but the settings are not applied...they just revert to the default Quicktime
ones.

Any suggestions

I am stumped. I cannot figure out how to make these settings stick. I need
to do this because a particular application that uses Quicktime Plugin in IE7
casue IE7 to freeze because Quicktime automatically checks for updates and
this seems to cause the whole thing to freeze at 100% CPU until killed by
Task Manager. Once I disable this setting in Quicktime the Web applet works
a treat.

Thank you for reading this rambling treatise.

TimeTraveller