IT asset management with VISIO

I have discovered that in VISIO you can link your shapes to a Datasource (eg Excel), and link each shape to a row in the datasource.

So you can write things like CPU, RAM, IP Address in the datasource, link the row to a Server Shape, display this info in the diagram and update all diagrams just by changing the excel file.

Now, it would be great if VISIO had some more specialized templates to model WebLogic domains etc... I will keep searching for CAD tools, I can't believe we are still confined to very generic tools like VISIO to model IT infrastructure...