Display Ads in Specific Taxonomy

Hello,

I am trying to determine with easiest way to make an ad appear for a particular taxonomy, From your README.txt file I found the section that discusses Displaying Ads from PHP:

  ------------------------
  Displaying ads from PHP:
  ------------------------
  To display an ad from within PHP code, make a call to the ad() function.
  You can optionally specify an ad group, the number of ads to display, and
  several other options.  For example, to display one random ad from all ads
  that have not been assigned to any group you don't have to pass in any
  parameters:
      <?php print ad(); ?>

  To display two ads from all ads that have not been assigned to any group
  you would execute the following code:
      <?php print ad(0, 2); ?>

  (The first parameter specifies the ad group to display ads from.  By
  specifying 0, we are telling the ad module to display ads that are not
  assigned to any group.  The second parameter specifies the number of ads
  to display at one time.)

  To randomly display an ad from a specific group of nids, for example with
  the node ID 69 or 76, you would pass in the following parameters:
      <?php print ad(NULL, 1, array('nids' => '69,76')); ?>

  (When specifying specific nids, any specified ad group is ignored, so we
  leave the first parameter as NULL.  The second parameter causes only one
  ad to be displayed at a time.  And the third parameter is an array that
  tells the ad module to randomly display either ad 69 or ad 76.)

  To display and ad randomly selected from multiple groups you can simply
  specify multiple groups separated by commas.  For example, to display 3
  ads from groups 24, 56 and 98 you would pass in the following parameters:
      <?php print ad('24,56,98', 2); ?>

  You can also specify how to display a given ad.  Current display methods are
  'javascript', 'jquery', 'iframe', and 'raw'.  When using the 'javascript',
  'jquery', and 'iframe' methods, ads will randomly change even when the Drupal
  pagecache is enabled.  When using the 'raw' method, ads will only change when
  the Drupal pagecache is flushed.

  To force one ad with a tid of 76 to display using JavaScript you would pass
  in the following parameters:
      <?php print ad(76, 1, array('method' => 'javascript'));

  To force two ads with a tid of 101 or 102 to display using the Raw method
  you would pass in the following parameters:
      <?php print ad('101,102', 76, array('method' => 'raw'));

I believe this PHP belongs in the Block section entitled: "Show block on specific pages," is that correct?

Assuming the Ad has an id of 1983 and the tid of the term that I would like the ad to appear in is 54, how would I write the PHP code?

Is there an easier way?

Thanks,

sam