Statistics (credits, duckets, diamonds) RevCMS disable staff displaying?

[C0R3G4M3R]

How can I disable staff displaying in statistics? I mean what do I need to do so that only ranks 1 to 7 are visible in the statistics?

Code:

<?php
    $sql = mysql_query("SELECT username, credits FROM users ORDER BY credits DESC LIMIT 0,9");
    while($a = mysql_fetch_array($sql)) {
        echo "<tr> 
                <td>".filter($a['username'])."</td> 
                <td align='right'>".Filter($a['credits'])."</td>
            </tr>";
    }
?>

It's showing all users, but I don't want that I were showed too (because I have "to many" credits) and I don't want that other users see how much I have. Hope someone understand what I'm trying to say and can help me :( :)
Really sorry for my bad english, I'm german.

[MentaL]

[asesinato]

<?php 
    $sql = mysql_query("SELECT username, credits FROM users WHERE `rank` <= '3' ORDER BY `credits` DESC LIMIT 10"); 
    while($a = mysql_fetch_array($sql)) { 
        echo "<tr>  
                <td>".filter($a['username'])."</td>  
                <td align='right'>".Filter($a['credits'])."</td> 
            </tr>"; 
    } 
?>

Change '3' to whatever rank your staff rank starts

[C0R3G4M3R]

<?php 
    $sql = mysql_query("SELECT username, credits FROM users WHERE `rank` <= '3' ORDER BY `credits` DESC LIMIT 10"); 
    while($a = mysql_fetch_array($sql)) { 
        echo "<tr>  
                <td>".filter($a['username'])."</td>  
                <td align='right'>".Filter($a['credits'])."</td> 
            </tr>"; 
    } 
?>

Change '3' to whatever rank your staff rank starts

Thank you, I thought it's that easy but I didn't knew ^^