A nice way of presenting the contents of a task list with Visio 2007 is as a PivotDiagram…
To start you, or rather your end users, need either Visio or the Visio Viewer from here: http://www.microsoft.com/downloads/details.aspx?FamilyID=d88e4542-b174-4198-ae31-6884e9edd524&DisplayLang=en
From the tasks list “Actions” -> “Create Visio Diagram”. Wait for the file to open, build, and then save to an appropriate document library.
When the visitor clicks on the link to the file it will/should load in an IE browser with tabs, zoom, and other Visio niceties
Caveat: the file will not update its display on task list item change as it is essentially an import into Visio. In my next Visio article I will explain how to overcome this hurdle.