Did you download BS Contact 7.2 or BS Contact VRML 6.1, both, or something else?
Both of those say 'test version'. Do they offer a 'full version' and if so how much does it cost? Is this the 'renderer' software? This may be obvious but I'm not sure...?
Glad to see you're on the path!
BS Contact VRML/X3D 7.1 is the one I have...
That's the renderer.
You install this, then double-click on the VRML file, and it's opened by the renderer and you get to interact with the model.