Adding to Post Form

Alright I have something here that I’ve almost been able to do but not quite the way I want to. Now guys I realize this is going to take some editing of the core files but I really have a gut feeling that this isn’t so hard, I just don’t know where to start.

I want to add more content textareas for writing or editing a post. I’m not happy with just having a big textarea to put everything into, because with the way I have things setup I will be having other users who would need some structure to their posts, such as:

Name: xxx
Address: xxx
E-Mail: xxx

…just as we have “Title” and the appropriate text input to add whatever it is you want for the title. There has to be a way to do this or a plugin that exists so custom form elements can be added to the Write or Edit Post forms. To keep what is entered saved might require a new table in the database but I’m surprised to not have found any attempts to add more form elements to the Write or Edit Post forms so far.