I use Windows 7 x64. I thought I disabled Autorun - that is nothing happens when DVD/CD is inserted. However, by accident I found out that if in Windows Explorer I go to "My Computer" and then double-click on DVD icon in the right pan Autorun still works. Is there a way to disable this as well?
What you are running into isn't AutoRun, or AutoPlay. It's the 'default action' for double clicking on a DVD, which is "Play". If you right-click the drive (with a DVD in it), you'll see "Play" is highlighted.
If you would prefer it to "Open" the DVD as a folder instead of playing the movie when you double-click the drive, then you could try editing the registry and change the action for the "DVD" class:
I believe the change should take effect immediately, but I'm not 100% sure, as I don't have a DVD disc around to test with right now. :)