squid as transparent proxy

["Yashpal Nagar" <nagar@xxxxxxxxxxxxxx>]

Hi!
   I have installed squid-2.3.STABLE1-5  with linux RH 6.2, working well with proxy settings at 8080 in internet options etc at client side.
without giving any proxy settings  it also works but the sites like mail.yahoo.com,msn hotmail and 123india.com etc does't logs in and keeps on asking password again and again due to some cookie prob, but i have already opt for accept all cookies..

Can someone tell the neccessary settings for transparent proxy in /etc/squid/squid.conf, so that user need not to fill any proxy settings etc etc.
Please help

Regards,

Yash