Ok guys, thank a lot for the info.
I found the solution, maybe someone will find it useful too:
Displaying Custom Fields Outside The Loop
There are times, when you need to display custom fields outside the loop, e.g., in the footer of the blog post. Displaying custom fields outside the loop will allow you, for example, to have a different footer for each blog post. To achieve, this two things need to be done.
1. Edit the blog post template (e.g., single.php) to make post ID available outside the loop. Find the line
Code:
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
and add the following code just below it:
Code:
<?php $GLOBALS['current_id'] = $post->ID; ?>
2. Use this code to display your custom field outside the loop, e.g., in the footer.php
Code:
<?php echo get_post_meta($GLOBALS['current_id'], "custom-field-name", true); ?>
That?s it! Now, when editing a blog post, add a custom field with ?custom-field-name? and it will display wherever you put that second bit of code.
source (through google cache)