Thanks Doc4, your query_post code worked … needed to change it slightly though, but here is the version that worked:
<?php query_posts(array(‘cat’=>array(64),’showposts’=>4,’post__not_in’ => array(121))); ?>
@wej00, thanks but I needed the array, because I am actually using a variable in place of the 121 which checks for previous posts on the page to prevent duplicates.