For all newbies who are confused about updating DATs and using the SU utility, I explain all this in my new book called "Windows Admin Scripting". I have atleast 4 examples on how to automatically get updates from NAI and load them onto client systems. There are also sections about updating Norton Antivirus and how to use the Windows 2000 RUNAS command (as opposed to SU). This book covers advanced WSH, KiXtart, Shell Scripting, AutoIt, ScriptIt, ADSI, WMI, logon scripting, and more. This book is really cool because it focuses on the topics and areas we deal with everyday. If you want to script it, its in here.
Here's the link:
http://www.coriolis.com/store/product.asp?sku=1241 http://www.amazon.com/exec/obidos/ASIN/1576108813/
PS: There are so many complicated postings about updating DAT files. Its really not that hard once you see it done correctly. I worked with NAI to create these scripts, and reluctantly they helped me out.