Contact Page 7 and Captcha

Hello All:
This is my very first attempt at WP and creating a Blog. Been doing it about two weeks and am starting to get the hang of things. However, I am a true neophyte so please forgive me if I sound a bit lost. I’ve looked in the existing dialogues about this topic, but nothing seems to help. So, here’s the issue: I’ve just installed Contact Page 7 and Captcha. Contact page works fine. Captcha simply is absent from the page. I assume from the process I’ve completed that the once activated, Captcha will automatically insert its instructions into my page. It hasn’t happened. Must I insert the Code/html/instructions or is there a solution out there already? Many thanks. Hope someone can help. Many thanks.
Mark