176529 CAPTCHA added to cgi

Third time I post this. The first programmer bailed before doing anything, the second one is leaving me hanging. I am NEVER trusting low review numbers again. This is a simple job, a small job for someone who could get more work from this if things go well. I constantly have work going on and am seeking someone reasonable and reliable for ongoing help. I need vqregister (a small cgi which allows automated email sign-up) to contain a CAPTCHA challenge to prevent spammers from using robots. You're welcome and encouraged to use an open source captcha tool, so long as you use something which is safe, secure, offers ongoing updates, no fly by night's please. The cgi pulls up html pages so the captcha would be installed into the '[login to view URL]' page. You could use a php captcha so long as it outputs into an html page. Please, I need this ASAP! Thank you.