[Blind-sysadmins] How do folks diagram?

Hi all. So nice to see some action on this list. I'm wondering how folks deal with visio diagrams especially creating these diagrams. I'm a network engineer and frequently asked to build complex diagrams of different environments. Up until now I've been paying a graphic designer to turn text detailed descriptions in to visio documents but wondering if that's the only solution. How are you all creating these? Also, how do you read them simply have a coworker or friend virbalize the diagram or is there a trick? I'm starting a new gig next week and have a feeling a lot of this will come up quickly. Thanks Scott