Microsoft Visio 2010 Viewer allows anyone to view Visio drawings and diagrams (created with Visio 5.0 through Visio 2010) inside their Microsoft Internet Explorer (versions 5 through 8) Web browser.
Link –http://www.microsoft.com/downloads/en/details.aspx?FamilyID=f9ed50b0-c7df-4fb8-89f8-db2932e624f7
