Windows NT Shell Scripting
by Tim Hill.
A great book that starts with the how and why of NT shell scripting and moves on to building advanced and useful scripts.
e.g. automate adding NT user accounts - download the scripts from the New Riders Website
Also covers how to use tools from the Resource Kit.
After writing this book Tim Hill was recruited by Microsoft.

Mastering Windows 2000 Server
by Mark Minasi et al.
A great all round guide - written with depth, clarity and a sense of humour. This book will get you up to speed on AD, DHCP, DNS and all the other new stuff including a few undocumented features.

For a taster of Mark's writing try subscribing to his newsletter at minasi.com

Mark Minasi's Windows 2000 Resource Kit
by Mark Minasi.
Mastering Windows 2000 Server (as described above) plus 3 other books covering, Windows 2000 Workstation, Registry and Active Directory.

Inside Active Directory: A System Administrator's Guide
by Sakari Kouti, Mika Seitsonen
Practical strategies for managing and Scripting Active Directory. The preface, scripts and errata are at kouti.com

Win 2000 Server Resource Kit
By Microsoft Corp
The essential documentation set plus Tools and Utilities.
There is also a version for Win 2000 Professional

A selection (but not all) of the RK tools can be downloaded from MS the download includes a few bug fixes!

Windows XP Professional - Full edition

Windows XP Professional - Upgrade

Windows 2000 Professional - Full Version

Windows 2000 Professional - Upgrade

Windows 2000 Professional - Licence only