<form method="post">
<select name='izbranoto'>
<option value="1">Сървър 1<option>
<option value="2">Сървър 2<option>
<option value="3">Сървър 3<option>
<option value="4">Сървър 4<option>
</select >
<input type='submit' name='go' value='Избери'>
</form>
<?php
if(isset($_POST['go'])){
$izbranoto = $_POST['izbranoto'];
if((izbranoto) == "1"){
mysql_query("select * from tablicata were server='$izbranoto'"); // ili kakto ti e zaqvkata ..
}
if((izbranoto) == "2"){
mysql_query("select * from tablicata were server='$izbranoto'"); // ili kakto ti e zaqvkata ..
}
if((izbranoto) == "3"){
mysql_query("select * from tablicata were server='$izbranoto'"); // ili kakto ti e zaqvkata ..
}
}
?>