I can't locate the Quick Time 7 control panel to input my Pro code

I have Windows Vista and downloaded Quick Time 7. I just bought the Pro registration code to upgrad to Quick Time 7 Pro. Apple explained to go into my Vista OS control panel to access the Quick Time control panel to plug in the purchased code, but its not there. I see icloud in there , no Quick Time. I checked out the other locations where Quick Time files are but still can't locate it. Been at this for a couple hours. Can anybody help?