Please modify this PHP code (Will Pay)

Hi,

I will pay 15 dollars via paypal to any one who can do this simple job.

The task:

In a standard WordPress tag cloud only the tags are shown. The number of posts under each tag is not shown. So I got someone to write this code for me that achieves this:

<?php
    $query_string = '
        SELECT *,name FROM '.$wpdb->prefix.'term_taxonomy
        JOIN '.$wpdb->prefix.'terms
        ON '.$wpdb->prefix.'term_taxonomy.term_id = '.$wpdb->prefix.'terms.term_id
        WHERE '.$wpdb->prefix.'term_taxonomy.taxonomy = "post_tag"
        ORDER by  '.$wpdb->prefix.'terms.name ASC
    ';
    $post_tags = $wpdb->get_results($query_string);
    ?>
    <div id="a" class="abc_tags">
        <ul>
    <?php
    foreach($post_tags as $key => $tag) {
        $newletter = substr($tag->name, 0, 1);
        if($newletter !== $letter && $key != 0) { ?>
        </ul>
    </div>
    <div id="<?php echo strtolower($newletter); ?>" class="abc_tags">
        <ul>
    <?php   } $letter = substr($tag->name, 0, 1); ?>
            <li><a href="<?php echo get_tag_link($tag->term_id); ?>" title="<?php echo sprintf( __( "View all posts in %s" ), $tag->name ); ?>"><?php echo $tag->name.' ('.$tag->count.')';?></a></li>
        <?php
    }
        ?>
        </ul>
    </div>

PHP:

This code displays a vertical tag list alphabetically and with the number of posts under each tag next to it. For example:

Apple (5)
Goat (2)
Zebra (10)

Problem is, this code shows every tag on my blog - I want it to show only tags under a particular letter. Like all tags starting with the letter "A":

Apple (5)
Ax (3)
Azazel (1)

So that's what I would like, to modify this code so that it only shows tags from a particular letter alphabetically with the number of posts assigned to the tag next to it.

(my email)

 

This offer is no longer valid, the job has been done,

Thanks.