Httpwebrequest Directory Submitter Demo Needed

Hi
im developing a small directory submitter tool. submit to “PHP Link Directory” site.

but im not able to send captcha to website.

so i need a demo to learn 🙂

i want a demo to submit to this site http://www.albertfield.net/submit.php

using httpwebrequest. NOT WEBBROWSER

i need code in C#

Here is screenshot for demo:

View post on imgur.com

again. code must in C#

Thanks