187718 spam blocking script

I am looking for someone to set up a basic script for filtering spam. The concept is simple, the first time someone emails me, they get an autoresponse asking them to verify they are not spam. They click on a link that goes to a word verification page with a captcha script. Once they fill it out correctly they get a confirmation page saying that all future emails to me from their email address (showing their actual email address) will go through immediately. All emails that I get that are NOT verified by the process will go into a folder that I can check at my own convenience, with a search option, in case if I got an email I need to find, I can type in the subject into the search, instead of going through 100's of spam emails looking for it. I will supply all of the graphics/artwork for the script. You can see an example of a similar script/service at [login to view URL] I will have more work in the future if your communication and results are professional. =)