Need suggestions to draw in Visio with inputs from Excel

Hi All,
I am having Microsoft Office 2013 installed in my laptop.
I have a requirement to develop code which creates Vision flow diagram with excel inputs. I have to use the organization chart of folder hierarchy using DIR and TREE commands. The diagram needs to show the files and folder hierarchy of a network drive. I have taken the data using DIR and TREE commands, but I don't know how to use this info in Visio.
Does anybody know any way to do this? Please help me on this one guys.
