homepage excerpt instead of content

Hi, using Nelo, and wanting the homepage to display a list of post excerpts instead of the full posts.

Within index.php have modified this:
<?php the_content(__('<p>Continue reading &raquo;</p>')); ?>

to this:
<?php the_excerpt(__('<p>Continue reading &raquo;</p>')); ?>

but no change. New to MU, so probably missing something real basic.