CAPTCHA element on a 1and1 MS Business PRO ASP form

Hi, Brief Introduction: I have used 1and1 for hosting websites for a long time now, and since I have started I have always used the MS BUSINESS PRO package with ASP. I know, I know should've used PHP etc. but it's what I have always used... Anyway I currently use a HTML capture FORM, which then validates and POSTS to a ASP page for collection of form element entered before finally sending to a predefined email address via the 1and1 mail server '[login to view URL]' (var Mailer = [login to view URL]). I use this for all my clients web sites and in particular their CONTACT FORM. Problem I am having however is the issue with spambots getting through the very basic validation field checker I have with in the HTML web page (javascript). Project: What I am after is a new 'contact' form that I can bolt onto a HTML page for clients, they has to a validation element to allow me to select mandatory fields from the form fields and also and more importantly a CAPTCHA element to stop any rubbish coming through (i.e. undefined/dead forms being sent to defined email address). Key Elements: I am assuming this would be two elements: 1. A laid out HTML Form with validation and CAPTCHA elements. 2. An ASP page compatible with 1and1 '[login to view URL]' transfer of information to a predefined email address chosen by me. Costings / Timeframe: Well the cheaper the better as always. I would not want to spend more then £50 on this simple project for any efficient programmer out there!! Additional Information: If you require a sample of my existing contact FORM with it's validation check as well as the ASP page it links to for email transfer, drop me a line and a email address for me to send it to you. So if you can help, it would be great to hear from you. Cheers Chris C.