Scripts not working in context of phpbb2

[jowy2000]

Basics:

Version of PHP: 5.1.4

Which database server and version: MySQL - 4.1.12-standard

Host: http://www.sv1hosting.com/

 

Problem:

I'm trying to put my own version of the script http://www.phpeasystep.com/mysql/10.html and the script found here at http://www.phpfreaks.com/quickcode/Delete-Data-From-Mysql-with-check-boxs-from-Form/668.php

(I didn't make many changes to the scripts, they're basically that with changed titles and database names) in context of a phpbb2 portal, like this list of staff members found at the site I'm trying to do this http://rakionleague.com/staff.php

The scripts function just perfect outside of this portal, but once placed into it (Even as an include) they simply don't work.

In the case of updating fields, the values appear, and I can change them, but when I submit it, the changes aren't made in the database.

I've looked around for problems such as this, and checked my code syntax dozens of times, but I can't figure it out. Is there some code in phpbb2 that is not compatible with those scripts? ~_~

When I brought this up in the phpbb support area, they promptly told me to go elsewhere.

Can anyone point me towards a solution?