I'm rather sure you have what's called Microsoft Paint or the equivalent on your computer somewhere or something better, draw up a labled set of pictures showing how it'll be displayed and how they'll enter it, and let me know if they'll need an account first and I'll see what I can make for you, I know PHP and MySQL. I went to a summer college type thing called Governor's School for it, litterally for making log in and log out pages, and comment and reply pages, among a few other things. So let me use my skills to help you, make the diagrams and I'll make the pages.
Need a page made? Draw a diagram, I suggest using Paint, show the picture with your post, it'll help a lot more than you think. Other questions? Draw a diagram for that too!