1. The disk has to have a disk.info (icon) file for such settings to be stored. Then just rmb over, say, window bar and select Snapshot->Window.
2. Find some random *info file and duplicate (copy) it.
3. Which bubbles exactly? (where do they appear?) MUI context bubbles are generally configured in MUI Preferences -> Help. Perhaps you disabled them for a certain application only? To change a global setting, open Ambient's menu and select Settings -> MUI (Ambient MUI is just for Ambient).