problem is on Windows Server 2003 standard (server works as Terminal Server)
I was installed IE8 trhough windows update after that i found some application compatibality issue so i downgrade from IE8 to IE7 as instructed by Microsoft KB article.
after that all user on terminal server has problem to download any files from the internet, always popup message comesup (i attached screen shot) "The security settings dont allow you to download from " i reset security settings to default level but its only effect on administrator account. all other users in terminal session cant set to default level.
how to reset IE7 settings to default level for all Terminal server user profiles so everybody has same settings as administrator and download files from internet sites.