[Aesma Deva]

Try changing this:

PHP Code:

while ($row = mysql_fetch_array($sql_result2)) {  
   $pagetext = $row["pagetext"]; 


To this:

PHP Code:

require_once(DIR . '/includes/class_bbcode.php'); 
$parser =& new vB_BbCodeParser($vbulletin, fetch_tag_list());
while ($row = mysql_fetch_array($sql_result2)) {  
   $pagetext = $parser->do_parse($row["pagetext"], false, true, true, true, true, false); 


(you can change the do_parse()'s arguments depending on what you want to parse, if you use it as I posted it now, HTML wouldn't be parsed, and smilies, BB code and the img BB code would be parsed)
I didn't understand your problem including global.php, though since it's a plugin and not an entirely new .php file, global.php should have already been included/requested.