fix for windows platform

This wasn't working for me on windows so I corrected the code.  Tested on Windows 7 x64

few references:
http://superuser.com/questions/36728/can-i-launch-urls-from-command-linewindows-directly
http://social.msdn.microsoft.com/Forums/en-US/iewebdevelopment/thread/5bf91e62-7be9-4f1d-9bac-5b2a4dd8ced7/
(not sure but 2nd one may require live id)