as best i can come up with, it isn't possible, well not without a LOT of work. it seems while the left pane is mostly abstractions of folders and files, the right is nearly all hard coded. Thus you can add or remove the items supplied, but nothing more.
I am still in the process of a few attempts, but i doubt they will prove succesful. The best advice i could give is, if you are willing to give up one of the folder links they provide, attempt to change it's default path to the one you were looking for.