How to open *.VSD files in Windows X.
VSD files are files that contain diagrams or schemas of a specific system (like a network infrastructure). They are created using Microsoft Office Visio and they can be views using the same software or a viewer: Visio Viewer.
Below you can find the download page for Visio Viewer 2003. Download and install it and you should be able to view VSD files.
http://www.microsoft.com/downloads/details.aspx?FamilyID=3fb3bd5c-fed1-46cf-bd53-da23635ab2df&displaylang=enLink redirects to microsoft website. The file is not hosted nor provided by this forum.