I'm fumbling a bit with this code.
Go OPENINRIGHT=vert Z:\Dropbox
That's exactly what I want, minus the folder tree. How do I also add in the tree? using NEW=tree opens a new Window, and I want it to be in the same window. Essentially just open the DropBox folder in Dual Vertical (with tree) mode, on the right side, keeping the current folder open in the left side.