Is there a way to exclude all posts and sidebars on the Frontpage?
Say, only a slider appears in the center?


Image/Header
Menu
Slider
Footer

Any idea on how to do it?
What I did was delete the code under THE LOOP in the center column. I thought I did it right. But upon testing, all the pages don't have any posts at all... so I was wrong.

I only wanted posts exclusion from the Frontpage.

Thanks in advance for the help.

The code in 'The LOOP' effects ALL the pages. If you want to prevent some of it from running at certain times, you need to put a PHP if statement around it testing for the case you want.

Say you didn't want it to display on an archive page, you could put

<?php if (!is_archive() ) { ?>

as the first line and

<?php } ?>

as the last line so nothing would show between the sidebars. You could take it a step further and add

<?php if (is_archive() ) { echo 'Sorry the archives are not being displayed'; } ?>

at the end (note the first case uses the '!' which means NOT, so it is saying 'if this is NOT an archive page display the posts. The second case says 'if this is an archive page, display this message')

You can go to http://codex.wordpress.org/Conditional_Tags to see all the different conditional tags you can use.