Plugin Development: Create New Options Variable In Admin Panel?

Hello all,

I am trying to create a plugin that utilizes the WordPress Options Mechanism to store user data. With in the Plugin’s Settings page I have a list of fields that the user can fill in to add their personal info to the Options section of the WP DB. For example the user has a place to add their name, address, telephone, ect. Everything works fine, however, I would like for the user to add more custom information as well. For example if they want to add the name of their school, or work. To achieve this it appears that the user will have to define the new option variable themselves and then give it a value. Is this possible? I am currently using this article as a basis to develop my options page. Any help would be great!

Joe