I used to have an ISA server set up on a Windows 2000 Server machine. About a year ago I uninstalled ISA server because we had purchased a new firewall appliance. This server has recently been rebuilt under a Windows 2003 server OS and ISA was not reinstalled. My problem is this. When we had ISA up and running all of our client machines were set up to run through Proxy. I will have local machines on restart (on a LAN) or if individuals take laptops home and then come back to the office on start up have their machines default to the old proxy settings of the ISA server. How do i prevent machines from using this old proxy setting? (I know how to remove the proxy settings in the IE control panel, what i want to know is how do i prevent these local machines from ever receiving this information in the first place?) Would my primary domain controller server be sending the proxy server settings to the client machines? And if so how do i change the settings so that it does not do this in the future?