I am aware of the AD Topology Diagrammer, but frankly it kind of sucks. The format it outputs is messy, and we have multiple large AD deployment which makes it even worse. Im looking to link my own ...

I have a document that has a Visio file embedded within a tab in Excel. This works fine. MIcrosoft even makes it easy to edit the Visio document. I just double click and it opens right up. It's great.