<input type="checkbox" name="check[]">
<input type="checkbox" name="check[]">
<input type="checkbox" name="check[]">
<input type="checkbox" name="check[]">
<!-- Сколько нужно боксов столько и ставь -->

<div style="text-align:left" >
<form action="" method="post">   
<br />
<?php 
while ($i <= $num_rows-1)
{
$ch[$i]=$i;
echo "<input type='checkbox' name='ch[$i]' value='$i' /> ch$i<br>";
$i++; } 
?>
<input name="ok" type="submit" value="ОК"><br />
<br />  
</form> 

<?php

$host="localhost"; // Host name 
$username="root"; // Mysql username 
$password="root"; // Mysql password 
$db_name="chatlist"; // Database name
$tbl_name="test"; // Table name

mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB"); 

$num_rows = mysql_num_fields(mysql_query("SELECT * FROM $tbl_name"));

echo "Получено $num_rows рядов\n";
$i = 1;


 include 'index.tpl';

if(isset($_POST["ok"])) {
  $i=1;
    while ($i <= $num_rows-1) {
        if(isset($_POST["ch"][$i]))
			echo $_POST["ch"][$i]."<br />";
			mysql_query("INSERT INTO `$tbl_name` 'тут не знаю что писать'") or die(mysql_error());
			$i++;
    }
}

mysql_close();

if(isset($_POST['action']))
 {
    echo "<pre>\n";
    print_r($_POST['checked']);
    echo "</pre>\n";

    $arr = array();
    
    $j = 0;
    for($i = 0; $i < 8; $i++)
    {
       if($_POST['checked'][++$j] == 1)
          $arr[] = 1;
       else
          $arr[] = 0;
    }

    echo '<pre>';
    print_r($arr);
    echo '</pre>';
    
    $sql = "INSERT INTO `table` VALUE('','".join("','",$arr)."')";
    echo $sql;

    //Пишим в БД
    //mysql_query($sql) or die(mysql_error() .'<br>'. $sql);     
 }

 $form = "<form method='POST'>\n";
 //Рисуем чекбоксы
 $j = 0;
 for($i = 0; $i < 8; $i++)
    $form .= ++$j . "<input type='checkbox' name='checked[". $j ."]' value='1'>\n" ."<br>\n";
 
 $form .= "<input type='submit' name='action' value='SEND'>\n";
 $form .= "</form>\n";

 echo $form;