Comments Section, Guestbook

I want to have a comments section on the homepage of my website. I want this comments section to be done similar to: [login to view URL] My website is [login to view URL] Notice how there is an option to post a comment at the top of all the comments, how there is a captcha to prevent spam, how it is nicely layed out, how there is a comments policy with a pop-up, etc. I want it similar to this website. As an administrator, I want to be able to delete or edit the comments. I need this done as soon as possible. There are many scripts that are ready...I want you to configure it exactly how it is on that website. I do not want to spend more than $50 for this project.