> Hello,
>
> I have a squid proxy running on my server, but I want windows client to
> discover it by selecting discover the proxy server option. Currently, I am
> using manual option.
>
> Sundar

I have used a .PAC file and a registry entry to set that on each client. I
believe the feature you are looking for is called WPAD - Web Proxy
Auto-Discovery Protocol. There seem to be several other ways to automate
this, but as long as you are using a Netscape or IE from the last few years,
you're OK.

This page covers how to set it up:
http://www.squid-cache.org/Doc/FAQ/FAQ-5.html