Home Page that start from Main Menu - How to delete all up items top menu search logo

How can I remove all the items up the Main Menu ?
I would remove Top Menu (not only the links, also the white bar), the search and the logo.
I would like that the home page start 5-10px from the top of page with the Main Menu.

Hi!
Removing the menus was discussed on our forum many times:
http://smthemes.com/support/topic/howcaniremovesearchboxmenusliderfacebookwidgetetc/#post-2326 (secondary) and
http://smthemes.com/support/topic/removecategorybar/#post-1217 (main menu).
To remove search and logo you have to delete this code:

<div id='secondarymenu-container'>

			<div id="logo">
				<?php $SMTheme->block_logo();?>
			</div>
			
			<div class="menusearch" title="">
				<?php get_search_form(); ?>
			</div>
			
			<div id='menu-box'>
			<div id='secondarymenu'>
				<?php wp_nav_menu('depth=0&theme_location=sec-menu&container_class=menu-topmenu-container&menu_class=menus menu-topmenu&fallback_cb=block_sec_menu');	?>
			</div>
			</div>
			
		</div>

from header.php located in the root directory of the theme.
Besides, you have to delete the code:

<?php smt_mobile_menu('sec-menu'); ?>

.
To change paddings and margins you have to edit the code style.css. We don't provide any kind of services for editing themes for individual users.