Windows Domain IE Proxy problem

Hi,

Recently I uninstalled Microsoft ISA 2004 from my company’s network. When I did that all the Domain Clients IE 6 proxy settings automatically changed to an old Proxy server which is no longer on the network (pre-ISA usage days, before my time in the Company, ie +2yrs).

I have scoured the Domain Controller and Security Policies, but could not see the setting. The Domain is a rollover from NT > 2K > 2003, and the PDC is a new box, and the old box referred no longer exists.

Any ideas would be greatly appreciated?

Cheers,
Emmanuel