Thank you! That worked great and you can insert into multiple columns. Just make sure you have corresponding inserts at the top of the page, then the hidden get elements. The url is something like: mysite.com/addrecord.php?post_type=my Special Post&col2=col2data&col3=col3data
There is an ending bracket missing in the above get, it should be:
<input type="hidden" name="post_type" value="<?php echo($_GET["post_type"]); ?>">