Terminal Services - TERMSRV.DLL
Termsrv.dll is a service provided by Microsoft. It allows multiple users to be connected interactively to a machine as well as the display of desktops and applications to remote computers. The underpinning of Remote Desktop (including RD for Administrators), Fast User Switching, Remote Assistance, and Terminal Server.
Because it has so many dependencies, we'd recommend leaving this service in place. By default, it will be set to run as "manual".
A description of services that run under svchost in Windows XP can be found at http://support.microsoft.com/default.aspx?scid=kb;en-us;314056.
A description of default services running under Winodws can be found at http://support.microsoft.com/default.aspx?scid=kb;en-us;Q250320.
Service
Microsoft