Forms in Posts

I installed a plugin to my wordpress called Exec-PHP. It allows me to execute php script in posts. It does a fantastic job of doing it too! However, I put a form into my post and it redirects back to the article index.php?p=15 although I used a variable: <?php $HTTP_SERVER_VARS[‘PHP_SELF’] ?>, though the variables from the form don’t seem to be ‘post’ing to the site once it redirects.

I was wondering if anything with wordpress would be conflicting with it.

Thanks for any help