This will index your vbClassified categories and ads.

Make a new file with this in it:
PHP Code:
 <?
vbSEO Google Sitemap Generator - vbclassified Add On.
# Written by Mike Weinand (http://www.thebubbler.com)

# Full HTTP path to your gallery root (including trailing forwardslash)
$classified_url 'http://www.thebubbler.com/forums/vbclassified.php';

# Priority you want to assign to the sitemap pages
$category_priority 0.8;
$ad_priority 0.5;

# How often you wish to flag for updates
$category_update 'daily';
$ad_update 'weekly';

# Tables
$categories_table 'vb_vbclassified_category';
$ads_table 'vb_vbclassified';


# DON'T EDIT PAST HERE #############################################

vbseo_add_url(
    
$classified_url0.9gmdate("Y-m-d"), 'daily'
);

$categories $db->query_read('SELECT categoryid FROM ' $categories_table ' WHERE display > 0');
while (
$category $db->fetch_array($categories))
{
        
$modified gmdate("Y-m-d");
        
vbseo_add_url(
            
$classified_url '?do=category&amp;categoryid='.$category['categoryid'],
           
$category_priority$modified$category_update
        
);
}

$ads $db->query_read('SELECT classifiedid, dateline FROM ' $ads_table ' WHERE active = 1 ');
while (
$ad $db->fetch_array($ads))
{
        
$modified gmdate("Y-m-d"$ad['dateline']);
        
vbseo_add_url(
            
$classified_url '?do=ad&amp;id='.$ad['classifiedid'],
           
$ad_priority$modified$ad_update
        
);
}
?>
And then add that file to your addons directory as well as addons list in the AdminCP.