Ok, I've been looking through regedit and .mp4\openwithlist is locked or something. I can't change the permissions for it and it won't let me see anything.
I just bought a new ipod video 30 gb. Whenver I try to install iTunes 7 it stops at the end of the installation and says "Could not open key: HKEY_LOCAL_MACHINE/Software/Classes/.m4a/OpenWithList. Verify that you have sufficient access to that key." and I can't figure out what to do. Please help me with my problem:(