LANsurveyor Express for Microsoft® Visio® is a powerful Visio 2007 plug-in that makes it easy to get comprehensive network maps in just minutes! Accessible via the Visio toolbar, LANsurveyor Express automatically discovers your network and produces topology maps in Visio format. Plus, LANsurveyor Express uses Visio SmartShapes® to represent your network devices and populates each node's custom properties with the node's IP address, network name, and fully-qualified domain name.
For a limited time the plugin is free instead of $499!!!!!!! Go Ahead!