I have created this sippet because I VPN into work to check problems or e-mail and had to change my IE settings to surf the internet. With this sippet, once configured will allow you to override your internet explorer proxy settings to connect and browse the internet with one double click of the mouse or as I have done, add it to my VPN profile auto starter and it reconfigures my internet browser after i'm connected.
(this will shut the browser if it's running, make the changes and launch it with the changed configuration)