Adding a captcha to a contact form

Here is the link for the original files that I downloaded [url]http://www.theonepointwebdesign.co.uk/web-design-and-development-blog/tutorials/creating-a-simple-captcha-form-with-validation/[/url] , It has the orginal captcha files i downloaded and the form i tried to incorporate them into are on this page Like i say i have no [url]http://www.cherriewebdesign.com/contactme.html[/url] idea of php so downloaded the files and tried to copy and paste bits in but can’t get it to work properly, so i just removed the the copied and pasted part.

I basically just want to add the captcha in the link at the top into my form but don’t know how to do it. When i tried to do it the captcha showed up, the image and numbers ect but the user could fill out the form and miss the captcha out, submitting the form only, i need it so the user has to fill out all mandatory fields then the captcha and submit the form. Can anyone help?

Also in #PHP _↴