Need help, please

I've spent far too long already trying to figure out how to change the "Donate Now" link at the bottom left hand column of this page (probably pretty straight forward):

http://llaa.org/

I was hoping someone could help me out... please

not sure if I should look in the php code or in the Drupal content interface to make the link change..

The php code driving the "Take Action" box looks like this:

Take Action

<?php

              if ( @strlen($node->flexinode_26) ) {
                   print " <li class=\"checkMark\"><a href=\"".$node->flexinode_26."\">".$node->flexinode_27."</a></li>";
             }     
                if ( @strlen($node->flexinode_28) ) {
                   print " <li class=\"checkMark\"><a href=\"".$node->flexinode_28."\">".$node->flexinode_29."</a></li>";
             }
              if ( @strlen($node->flexinode_30) ) {
                   print " <li class=\"checkMark\"><a href=\"".$node->flexinode_30."\">".$node->flexinode_31."</a></li>";
             }     
                if ( @strlen($node->flexinode_32) ) {
                   print " <li class=\"checkMark\"><a href=\"".$node->flexinode_32."\">".$node->flexinode_33."</a></li>";
             }
             
?>

...any ideas or help would be appreciated thanks!