Captcha on Post

[high105]

Is there a mod or plugin that I can make it so until you have 5 posts, you must complete a captcha before submitting it? If you need more clarification please let me know.

[Yaldaram]

This tip will force Captcha to the new users having the post count below 5 posts.

Open the following files;
./showthread.php line 1052
./newreply.php line 438 and 1030
./newthread.php line 370 and 881;

Search for;

if($mybb->settings['captchaimage'] == 1 && function_exists("imagepng") && !$mybb->user['uid'])

and Change it into;

if($mybb->settings['captchaimage'] == 1 && function_exists("imagepng") && (!$mybb->user['uid'] || $mybb->user['postnum'] < 5))

Change the 5 the the number of posts you want to check against.

[SunDi3yansyah]

okay this is how I did it perfectly.

what if determined appropriate group?
certain groups should use captchaimage,
or
certain groups who do not use captchaimage?
and what if more than one group?