I’ve found that it’s become helpful to assign Leopard’s new Finder to a specific Space so that new Finder windows always appear together with their brethren.
However, while many people know how to assign an application to a given space using the Expose/Spaces pane in System Preferences, doing the same thing to the Finder is a bit of mystery, since it’s nowhere to be found in the Applications folder.
Actually, you just have to know where to look. Finder.app is located on your boot drive at:
Just drag the Finder onto the Application Assignments list in the Spaces preference pane, select the desired space, and you’re good to go.