Here’s the recording of Talk TechNet - Episode 1 - GPOs with Jeremy Moskowitz. The attached file is in .MP3 format. Be sure to subscribe to the RSS feed for podcast support. Each episode is 60 minutes.
Just a quick & dirty 'hack' to block IE Internet access via GPO:
Deploy IE proxy settings and set the proxy server address to something like '0.0.0.0'
Of course you'll also have to hide/block access to the 'Connections' tab in Internet Options.