Replacing captcha

[HotAir]

Hi,

I purchased a different captcha script to use in other sections of my site, and I'd like to use this other script in the contactowner.tpl form to keep it consistant with the rest of my site.

I've looked through contact.php to see if I could figure out how to replace freecap with my captcha script, but I'm afraid its beyond me!!

Here's the code to incorporate this other captcha function:

include('/captcha/captchac_lib.php');   
 $Turing_code = $_REQUEST["Turing"]; 
 if ( CheckCaptcha($Turing_code) ==1 )

Is anyone able to show me how to replace the included freecap with this one?

Thanks!