Excerpt and More Tag

I’d like to do something to the effect of:
<?php the_excerpt(__(‘Continue Reading This Entry’));?>

I want to use the excerpt, not the more tag, so the_content won’t cut it in this case. I’ve tried advanced excerpt plugin, but it’s not working in wp3.

WP Documentation indicates that you can do it by adding to functions.php:

function new_excerpt_more($post) {
return ‘ID) . ‘”>’ . ‘Read the Rest…’ . ‘‘;
}
add_filter(‘excerpt_more’, ‘new_excerpt_more’);

But I tried that, and my excerpts aren’t showing more tags.

Anyone got any ideas? Thanks!