Proxy/squid/cache/ieak

http://www.safesquid.com/html/portal.php?page=6
http://www.safesquid.com/html/portal.php?page=13

http://www.craigjconsulting.com/proxypac.html
http://www.craigjconsulting.com/setproxy.html
http://technet.microsoft.com/en-us/ie/bb219517.aspx