I have SharePoint installed on Windows Server 2003. I'm trying to access the site on a Windows XP SP3 or sp2 client computer with client login (client is a site contributer), Moss pompet login screen each time when click any link.

if used SIte Administrator login then i works fine.

i have done all thing like.
Add site in trusted site, and checked automatic login with current user & passpord and also add username and password to passport management.
Butt All in vain.

We have a single forest, a single tree, a single site, and a single domain.

Any suggestions