I really can't see the point of Dolphin. So to change back to Konqueror:
"To replace Dolphin with Konqueror as a default file manager go to kcontrol Then Click on KDE Components -> File Associations and expand the inode section. Highlight directory and move up Konqueror above Dolphin, next highlight system_directory and move up Konqueror above Dolphin."
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On November 30th, 2007 RobertM