Another useful, and free, VS2008 tool Source Code Outliner PowerToy.
Why install? Well it is free, painless (negligable learning curve), and it helps.
Install it and go to the menu View | Other | Source Code Outliner Power Toy’. Then drag the window to dock into your Visual Studio IDE (see picture). Now you can forget about about it .. it adds more convieniant navigation that offered by the standard IDE drop downs.
Not a killer app, but nice.