Building a basic CAPTCHA with Rebol/View

Has anybody experimented with CAPTCHA's in Rebol/View, i.e. creating an image with a distorted word or number that can only be read by a human ? CAPTCHA is a test to tell computers from humans apart, normally used to prevent automatic web form submissions http://www.cs.cmu.edu/~biglou/captcha.pdf Thanks ___________________________________________________ Yahoo! Messenger - Nueva versión GRATIS Super Webcam, voz, caritas animadas, y más... http://messenger.yahoo.es<