on the root folder, find config.php
open it... and find
Code:
#
# Defined Titles
#
$name_titles = array("Mr.","Mrs.","Ms.");
$smarty->assign("name_titles",$name_titles);
change from:
Code:
$name_titles = array("Mr.","Mrs.","Ms.");
to
Code:
$name_titles = array("Mr.","Mrs.","Ms.","Dr.");
Done