Translation for breadcrumb phrase like "You are here" to "Sie sind hier:"

Hi,

how can I add a phrase to the translation strings and how do I add the string to a template?

In my case it´s just the breadcrumb-phrase, like "Sie sind hier" or english "You are here:". I just want to switch this phrase, when I change the language of the page.

The Code for breadcrumbs inside my page.tpl.php at the moment looks this way:

 <?php if (!$is_front): ?>
<div id="breadcrumbs2">
<p><strong>Sie sind hier:</strong>  <?php print $breadcrumb; ?><?php print $title; ?></p> 
</div>
    <?php endif; ?>
    <?php if ($is_front): ?>
<div id="breadcrumbs2">
<p><strong>Sie sind hier:</strong>  Startseite</p> 
</div>
    <?php endif; ?>

Is it even possible to add the string instead of the pure text in the page.tpl.php-file?

thanks for any help,
Marc