I found the answer, for those wondering, you can define org-agenda-files
list within the org-agenda-custom-commands section which limits the scope of
the custom agenda to only those files.  For reference:

http://orgmode.org/worg/org-tutorials/org-custom-agenda-commands.php#sec-2.1

Nick Parker
www.developernotes.com


On Wed, Feb 17, 2010 at 7:56 PM, Nick Parker <nickp@developernotes.com>wrote:

> Is it possible to tell orgmode to ignore the contents of an entire file
> when rendering a custom agenda even if that file is included in my
> org-agenda-file property?
>
> Nick Parker
> www.developernotes.com
>