Profiles on WP Pages

I am admin to a book club that has twenty members to it. The site uses WP 2.7 to manage the entire site. The problem is that I am trying to make it where I can show each users information on page. The info that I want to show is the profile info. I have tried the $curauth stuff, but I need to know how to get it to work & if it will work with twenty different people. How will it tell the different people apart?

I want to make it where I can have the members only able to make posts & edit their profiles. I would rather they not touch the pages. If I can figure out how to bring the information from the profile area to a page then I will be set.

I am not very tech smart when it comes to PHP or WordPress so when you explain this please break it down in step by step form. Thanks in advance.