This is made by lesane in another post [USE SEARCH FUNCTION

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In functions.php find:
PHP Code:
eval("\$post[buddy] = \"".gettemplate("postbit_buddy")."\";");
After it add:
PHP Code:
if ($post[posts]<30) {
$post[stars] = "<img src=\"images/stars/1.gif\" border=\"0\">";
} elseif ($post[posts]<100) {
$post[stars] = "<img src=\"images/stars/2.gif\" border=\"0\"><img src=\"images/stars/2.gif\" border=\"0\">";
} elseif ($post[posts]<250) {
$post[stars] = "<img src=\"images/stars/3.gif\" border=\"0\"><img src=\"images/stars/3.gif\" border=\"0\"><img src=\"images/stars/3.gif\" border=\"0\">";
} elseif ($post[posts]<500) {
$post[stars] = "<img src=\"images/stars/4.gif\" border=\"0\"><img src=\"images/stars/4.gif\" border=\"0\"><img src=\"images/stars/4.gif\" border=\"0\"><img src=\"images/stars/4.gif\" border=\"0\">";
} elseif ($post[posts]<1000) {
$post[stars] = "<img src=\"images/stars/5.gif\" border=\"0\"><img src=\"images/stars/5.gif\" border=\"0\"><img src=\"images/stars/5.gif\" border=\"0\"><img src=\"images/stars/5.gif\" border=\"0\"><img src=\"images/stars/5.gif\" border=\"0\">";
} elseif ($post[posts]<2000) {
$post[stars] = "<img src=\"images/stars/6.gif\" border=\"0\"><img src=\"images/stars/6.gif\" border=\"0\"><img src=\"images/stars/6.gif\" border=\"0\"><img src=\"images/stars/6.gif\" border=\"0\"><img src=\"images/stars/6.gif\" border=\"0\"><img src=\"images/stars/6.gif\" border=\"0\">";
} elseif ($post[posts]>2000) {
$post[stars] = "<img src=\"images/stars/7.gif\" border=\"0\"><img src=\"images/stars/7.gif\" border=\"0\"><img src=\"images/stars/7.gif\" border=\"0\"><img src=\"images/stars/7.gif\" border=\"0\"><img src=\"images/stars/7.gif\" border=\"0\"><img src=\"images/stars/7.gif\" border=\"0\"><img src=\"images/stars/7.gif\" border=\"0\">";
}
You need to edit the path to the stars images though. And you could also edit the post amounts wich the user must have to display the stars.
Then you can put $post[stars] in your postbit to show the stars.
Goodluck