Microsoft Remote Server Administration Tools (RSAT) enables IT administrators to manage roles and features in Windows Server 2008 from a remote computer running Windows Vista with SP1. RSAT includes support for remote management of computers running either a Server Core installation or the full installation option of Windows Server 2008. It provides similar functionality to Windows Server 2003 Administration Tools Pack.

RSAT includes the new Group Policy Management Console (GPMC), which includes support for search, filter, comments, and Group Policy preferences for use in Windows Server 2008 and Windows Server 2003 environments being managed from Windows Vista SP1 computers.

Microsoft Remote Server Administration Tools for Windows Vista with SP1 (x86)
http://www.microsoft.com/downloads/details.aspx?FamilyId=9FF6E897-23CE-4A36-B7FC-D52065DE9960

Microsoft Remote Server Administration Tools for Windows Vista with SP1 (x64)
http://www.microsoft.com/downloads/details.aspx?FamilyId=D647A60B-63FD-4AC5-9243-BD3C497D2BC5