Blog application

I need an application (html) to be installed or insertedonto a page from my website.? Thecreation of the website is nearly finished.? It has been created using WordPress.? See [login to view URL] Function needed:? I want visitors to be allowed to “sign up?? for the privilege of postingcomments.? I want to be able toapprove their sign up before allowing their access.? Then, I want visitors to be able to select any one ofnumerous categories or topics that are identified on the page with a hyperlink(specifically state, i.e., Alabama, Alaska, etc).? And I want to be able to continually add categories fromtime to time.? After providing ausername and password, I want users to be able to post comments.? The on-screen appearance will be athread of comments identified and separated by date and username (nickname,alias, etc). Example:? On acertain web page, a visitor will find boxes for login.? After having completed an approved signup, the visitor selects and clicks the “Alabama?? tab or link.? If the visitor has not already loggedin, I envision that a dialog box opens informing that the visitor is requiredto login with username and password in order to gain access.? Upon successful entry, the visitor isable to post a comment that is relevant to “Alabama??.? The website administrator will approve all posts, etc,before allowing them to be shown or viewed on-screen. Summary:? Myhope is to be given the html code that I can paste onto my page.? I am assuming I will go to theWordPress administration area of my website to do this and then achieve all thefunctionality explained above.? Irealize that rather than being provided with code, I may simply be providedwith careful instruction on how to do this on my own.? Either way is fine.? The functionality is what I want regardless of how it is achieved.