Hi Alan,
Try using a document-relative path (instead of full URL) i.e. change your line:
<fb:comments xid="http://www.tgrowbags.com/facebook.php" numposts="10" width="425" publish_feed="true"></fb:comments>
to:
<fb:comments xid="facebook.php" numposts="10" width="425" publish_feed="true"></fb:comments>