Custom fields in definition list

Hey, I have a bunch of custom fields that I want displayed in a definition list like this, and not the unordered list that is by default:

<dl>
<dt>Value</dt>
<dd>Key</dd>
</dl>

I’ve managed to print out the values, but not the keys completely. The keys just come up as ID numbers, like this:

<dl>
<dt>Value</dt>
<dd>1</dd>
</dl>

This is my code at the moment:

$custom_field_keys = get_post_custom_keys();

foreach ( $custom_field_keys as $key => $value ) {
	$valuet = trim($value);
	if ( '_' == $valuet{0} )
	continue;
	echo "<dt>" . $value . "</dt>" . "<dd>" . $key . "</dd>";
}

How would I get the keys to print out their name and not their ID numbers?