You can open one of the basic preference tools in either of the following ways:
From the Desktop Preferences menu
Choose Applications->Desktop Preferences. Choose the preference tool that you require from the submenu. The dialog for the tool is displayed.
From the Start Here location
Open a Nautilus window, then choose Go->Start Here. Alternatively, double-click on the Start Here object on the desktop background. The Start Here location is displayed. Double-click on the Desktop Preferences object in the Nautilus window to display your preference tools.
Double-click on the tool that you require. The dialog for the tool is displayed.