captcha + aspx form

 hi to all....
i had created a captcha coz by reffering a blog http://nanddeepnachan.blogspot.com/2008/06/captcha-for-sharepoint-blog.html. its successfully can run after i deploy it.
I created a feedbackForm in aspx, then add the captcha web part. the captcha appeared in feedbackForm, but the problem is the data tat i added in feedbackForm cant insert in sharepoint list...
.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FeedBackForm.aspx.cs" Inherits="_Default" %> <%@ Register tagprefix="CaptchaWebPart" namespace="CaptchaWebPart" assembly="CaptchaWebPart, Version=1.0.0.0, Culture=neutral, PublicKeyToken=4f32b4c78105ea2b" %>
.aspx.cs
public void captchaValidator_ServerVa ...