Will pay you to do this

I need a page that a visitor can go to and type in a comment, just like Twitter. I don’t want them to have to have to validate their login, so they type in their name, a category, perhaps an email, and then can type in their comment without leaving the page.
This should be easy yes? I have asked for help for over a week now, and have tried and tried to hack the loop, and comments, but I am just not as solid with php as I thought. I don’t have much on this but I can afford an hour if you can do it.
I have the design at dropbox, so let me know.
webmasterintexas at gmail dot com