http://www.macosxhints.com/article.php?story=20090903104925782
10.6: Make List view Stacks work like Grid view Stacks
This will make the List view behave like the Grid view, only with all items arranged in one vertical list, with names to the right.
Open a Terminal Window and enter the following:
$ defaults write com.apple.dock use-new-list-stack -bool YES
$ killall Dock
(Change YES to NO to turn off. Kill the Dock for changes to kick in.)
Hit Command+ (command plus) to zoom in on the view.
Enjoy.
10.6: Make List view Stacks work like Grid view Stacks
This will make the List view behave like the Grid view, only with all items arranged in one vertical list, with names to the right.
Open a Terminal Window and enter the following:
$ defaults write com.apple.dock use-new-list-stack -bool YES
$ killall Dock
(Change YES to NO to turn off. Kill the Dock for changes to kick in.)
Hit Command+ (command plus) to zoom in on the view.
Enjoy.