Setting All Folders to List in W7

From windows 7 "Help and Support":

Tip

• To restore the original settings on the View tab, click Restore Defaults, and then click OK.

To apply the current view setting to other folders

While browsing folders in the Computer folder, you can apply the current view setting to all folders on your computer that are optimized for the same content as the folder you have open. For instance, the My Pictures folder is optimized for picture files. If you open this folder and change the view to Large Icons, you can apply the Large Icons view to every folder that's optimized for pictures. (This setting does not apply when viewing files and folders using libraries.)

1. Open a folder, click the arrow next to the Views button on the toolbar, and choose a view setting.
2. On the toolbar, click Organize, and then click Folder and search options.
3. In the Folder Options dialog box, click the View tab, click Apply to Folders, click Yes, and then click OK.