Using Microsoft Office to Build a Network Diagram 2. Now that we've set up our process, ... Once created, you can open the CSV file in Excel and then save it as an Excel workbook.

If you are not familiar with Visio, it's used for creating diagrams such as flow charts and network diagrams. What I didn't realize is that you can actually create Visio diagrams from within Excel.

SmartDraw packages a broad pallet of diagram templates that can be used to visually present everything from physical network layouts to database designs to mind maps and furniture positioning.