AD links
Research time again. This one's for 70-294 (AKA Planning, Implementing, and Maintaining a Microsoft Windows Server 2003 Active Directory Infrastructure) The MS objectives have been printed out!

Exam reviews:
Seven things to know about exam 70-294 - from techrepublic.com
70-294: Active Directory Planner - from mcpmag.com

Other links
Planning and designing your Active Directory from searchwin2000.com excellent
adssupport.net Looks a promising source
AD tips from about.com
Verifying Active Directory Installation basic but worth memorising
Top 10 study topics for Windows 2003 certification from techrepublic.com
Active Directory Cleanser (!)