With this plugin you can Insert the Captcha into the contact form in Magento 1
- Unzip archive in your local path
- You must edit the name of directory of the template app/design/frontend/DEFAULT with yours template
- Upload the package on your Magento site
- Go to System -> Configuration -> Customer Configuration -> Captcha
- Select "Contact Page" in CAPTCHA section
- Save
- Empty the cache
- Verify that the captcha showed in contacts page
Plugin tested with Magento 1.9