No, the items in the Deskbar are automatic, and dynamic. It shows the currently running applications only, while also providing you with a way to hide and show the windows in each application. Additionally there is a mail status icon, and that neato digital clock.
Third parties are free to create applications which more closely duplicate the old Browser Dock (at least one is already available). Check the BeWare section of the Be web site to find utilities which might provide the functionality you're looking for: