Add CAPTCHA To Existing PHP Form

This is a VERY simple project - so please don't over bid. We have an existing website and the form is complete. All we need is a really nice CAPTCHA area to the form to stop spam registrations. We will provide the existing files for the form only. You agree to update the files without any need to connect to our server, hosting provider, etc. You agree to the following: 1) Add the CAPTCHA to the existing form, keeping the same layout to the form 2) Add the CAPTCHA section at the end of the form 3) Enter the code in a clean manner with "Comments" to the HTML code - for future modification and/or editing of the CAPTCHA code 4) The CAPTCHA code must be modern and the latest CAPTCHA security 5) Send the files for us to test - before final payment is made. 6) This is a FAST turn around and need it within 1 day. Thank you