I am having some major issues playing .mp4 and .mov files on a Windows Vista machine...like they won't play! 
We had been having some big issues with the computer overall (that's another story) and so we wiped the hard drive and reinstalled the OS. However, we were able to play all video types with no issue before the restore.
What drivers do I need to install in order to be able to play the .mp4 and .mov files? I have downloaded Quick Time and the videos play fine in Windows, just not in Proclaim. Do I need to download Quick Time Alternative? What codecs do I need! HELP! 