You're running the correct program. The green arrow should have been next to the Run in Browser button. You can also do this by clicking the Debug menu and choosing Start Debugging.
If that is not available, then Visual Web Developer is probably alert to something in your file that prevents it from being run. Your screenshot includes a missing master page error. I'm not sure if that is the reason or not. I'm only just getting into master pages myself.
Whatever you can do or dream you can, begin it. Boldness has genius, power and magic in it. Begin it now.
-Johann von Goethe
When Two Hearts Race... Both Win.
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Chroniclemaster1, Founder of www.EarthChronicle.com
A Growing History of our Planet, by our Planet, for our Planet.