Thanks all. But I only want to know if there is a build-in windows messenger in windows server 2003 Standard edition. Surely there isn't? To:AaronXP Thank you! I find Windows messenger is only removed from MSN site,but still listed in "messenger "site. Windows messenger -- http://messenger.microsoft.com MSN messenger-- http://messenger.msn.com Can you tell me if there is a build-in windows messenger in 2k3?If not ,WHY?And in the site creating an unattended windows 2003 cd,why there isn't an unattended installing method for windows messenger?Thanks!