Thumbnails

sorry I couldn't find anywhere else to put this thread. The problem is that I have this piece of code

<img src = "<?php echo get_post_meta($post->ID, "thumbnail_url", true); ?>">

It gets an image depending the post id and I want it to show on the front page of my website beside the post title. Is there anyway to do that?

I also have question that is that I want my front page to have to columns of post rather than one, If its possible please reply.

Thanx in advance.