pls help me

we hv a big enviroment networked.
we use squid proxy.
access allowed by src address previously.
we have win2000 network with ads.
my requirement is the proxy should allow domain users only for access.
how can i map my windows userdatabase with squid
is there any thing specific which has 2 b included in squid.conf
anybody pls helpme out..?
pls rply in detail.
thanx in advance!

You will have a better chance to get a reply to your question at the Squid web site.