System.DirectoryServices

I am running Visual Studio 2003 and I cannot find system.DirectoryServices.
I have seen some example code for enumerating groups in VB.NET but when I add my IMPORTS line I cannot compile my code as the system.directoryservices import entry is invalid.

Can anyone tell me how I can refer to this or what has replaced it?

Thanks,
Sam.

is there a needed project reference? go to References/Add and look thru the .NET tab's list

yeah, you need to add a reference from Project - Add Reference

look for system.directoryservices.dll