Display Values of Custom Fields in Post?

Hi Folks,
almost there…I added a function to my functions.php file like so:

function get_custom_field($key, $echo = FALSE) {
	global $post;
	$custom_field = get_post_meta($post->ID, $key, true);
	if ($echo == FALSE) return $custom_field;
	echo $custom_field;
}

I then experimented with adding <?php the_meta(); ?> to the single.php file.
This got my custom field keys and values to display in the body of a post. HOWEVER, I only want the values of the keys to display. For example, I have a custom field key called Phone Number. I only want to show the value, i.e. 555-555-1234
Is there a simple php method that can do that?
Also, is there a way to make a url that is a custom field value an actual link?
Cheers,
Jenn