74074 Spam BOT BLOCKER /Image Gen.

I need advice, Bots are crawling my site and copying emails from the site of users, I had a form, to route th eemails through but th ebots used the form too, now I need to stop the bots by using something like this, (bots cant read images) [login to view URL] you should not need any more explaining really to understand, if you can do it, So I am looking for someone who has done this in .asp or coms, I dont neccessarily need it integrated just need th ecode fast and advice on how the image generator what you used, I have an image com already in place. I will pay for information, IF YOU HAVE DONE THIS BEFORE PLEASE STATE IT. Thanks