Restricting access to the internet via group policy

[Django x2]

guys,

2K3 DC and vista clients all have IE7.

I've found numerous articles that suggest creating a GPO and putting a 0.0.0.0 proxy and then disabling the connections tab.

Well, I've done this, and whilst you cant make any changes in IE as a user, it still connects to websites.

Is there an IE7 adm template??

TIA