Download PlacesBar Constructor, to customize Places Bar
PlacesBar Constructor is a free utility which gives you an opportunity to change folders in the Places Bar at the left side of the Open and Save dialogs.
The Places Bar contains frequently used folders determined by the system.
If you want to set the values of the Places Bar by yourself PlacesBar Constructor will help you do it and avoid editing the registry by yourself.
(Not all applications will accept the change).