How to browse folder with specified Path(eg.E:\)and user interface like Excel macro

Hello,Everyone,Nice to Meet you here.

I am writing a macro for the special opreation that  it can save  Drawing file(slddrw) too when executing make indenpent command in the assembly.

But there is a problem that how can I Browse Folder(the path to save Part and Drawing) like browse Folder in Excel Macro(Eg. reference Picture1)

This method can set the path when dialog show via ".InitialFileName = "E:\""

I want to set initial Folder when browse dialog opened with  SOLIDWORKS Macro by VBA.How can do this with SOLIDWORKS Marco ? 

THANKS A LOT! 

SolidworksApi/macros