This adds a simple (not depenedant on installed libraries) captcha routine to the add site page of DewNewPHPLinks. The recent version, DewNewPHPLinks 2.1.0.1 has this included.  This add-on should only be applied to previous versions.

The included readme.txt file has the following instructions.

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Create the phplinks_captcha mysql table using the queries in dnplcaptcha1.sql 

If you have an unaltered /include/add.php file,  and unaltered /include/review_add.php
you can replace them with the newer versions.

Note  the code for the banlist add on is included in /include/add.php, if you have installed the banlist add on,
un-comment the banlist block of code near lines 119 through 139

edit /include/config.php
near the bottom, add this to the list of mysql table names.
$tb_captcha = 'phplinks_captcha';

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