NuCaptcha Drupal Plugin
Step 1: Download the Drupal Captcha Module
The NuCaptcha plugin extends the existing Druapl CAPTCHA module. Download it from the Drupal website. Unzip the folder then upload it to sites\all\modules within the server running Drupal.

Step 2: Download the Drupal NuCaptcha Plugin
Download the Drupal NuCaptcha plugin here. Navigate to sites\all\modules within the server which drupal is stored on. Unzip the folder and upload it to here.

Step 3: Create an Account
Create an account at NuCaptcha. Verify your account by the conformation email sent. Log in to NuCaptcha. Click on Client Key, and save this for later. This is important, keep it secret and do not lose it.

Step 4: Configure
Go to your Drupal homepage and click on Modules in your dashboard. Spam Control should show up near the bottom of the popup. Activate all of the plugins in spam control and save configuration. Click Configure on the NuCaptcha plugin. Remember that Client Key you saved? That goes into the appropriately labeled field. Save Configuration.
The Custom HTML box near the bottom of the configuration menu will show up around your NuCaptcha Challenge. In here you can put styles, div tags, etc. Just remember that if you forget ${NuCaptchaPlayer} it will be appended to you custom HTML.
Step 5: Test
Click on the CAPTCHA bar near the top. This is where you describe exactly when you want NuCaptcha security to kick in.


Select whichever type of challenge you want for both user_pass and user_register_form. Log out of your Drupal website and click Create new account or Request new password to see NuCaptcha in action!