Editing the user_profile_form ...

Hi,

at first, I already looked in to a lot of tutorials to modify forms, but they just made me confused. I was succesful editing a phrase in a form, but that´s not really what I need, I want to remove elements from the form.

What I want to do is (as first step) to remove a lot of elements from the user_profile_form.

It should just be limited to name, password, E-mail.

Because I installed some extra modules, also their configuration appear in the user_profile_form, like guestbook, flickr-setting, user blog settings (from advanced blog-module etc.).

As a first step an example of how to clear the whole form from everything but the primary user-related data for his account would be helpful.. or also clear the whole form and built it up from zero.

I tried long to understand building forms, but I fear, I will never ever understand it. A tutorial wich shows a good example (also with screenshots of what exactly happens to the form - instead of pure code) would be helpful.

thanks for any help and/or tutorial-suggestions,
Marc