custom category (archive) page

Hello.

Can you help me to make category page as regular page?
I have everything what I need, just it doesn’r work :)

1. I need to have just regular page. I would like to copy all code from page.php to category.php (or archive.php).

This doesn’t work for me. As I imagine this should work like normal page. If you visit some category page you should get empty, page with header, sidebar etc.? Right?

Right now, I have posts one after another like blog (even with code from page.php). I have my files in child folder (category.php and archive.php works like that). If I have empty file, only white page shows (as should be).

2. I also heve nice plugin that let me to edit category page as regular post (Enhanced Category Pages ).
What I need to do is to include this code:

//in category.php or taxonomy.php
<?php
    global $enhanced_category;
    //get enhanced category post and set it up as global current post
    $enhanced_category->setup_ec_data();
?>
<!-- enhanced category content -->
<?php the_post_thumbnail("medium"); ?>

<?php get_template_part( 'content', 'page' ); ?>

<!-- custom fields -->
<?php
    get_post_custom();
?>

<?php
    // If comments are open or we have at least one comment, load up the comment template
    if ( comments_open() || get_comments_number() ) :
        comments_template();
    endif;
?>

From this I only need part for content. After that I can show only text from my editor.

Can you help me to mix this code?
I think I need only this part:

<?php
    global $enhanced_category;
    //get enhanced category post and set it up as global current post
    $enhanced_category->setup_ec_data();
?>

to run this but right now I can’t even make empty page.

Thnaks!
rm