Currently, as stated here, I have to 1) find a web page file and 2) right click to select Browse with... to open the dialog which lets me to configure the web browser to start with.
Is it possible to open that dialog quickly from menu/hotkey/toolbar? Please share.
More information
Start with this
Will open this

There is a great Visual Studio Extension for this: “Default Browser Switcher”
http://blog.wovs.com/2010/08/make-it-easy-to-change-default-browser.html
Update:
is VS2013, this has been added as a default feature: