Condition pour une requete selection

Bonjour,
tt le mondes jaimerai savoir comment inserer une condition de verification ,je mexplique jai creer une base"personne" et jai creer aussi une autre page appelee "requeteselection.php" dou elle fait appel a la base pour savoir si le visiteur est membre ou pas voici les trois pages (connexion,requeteselection,home)

code
home.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>bonjour</title>

<script language="alerte" type="text/javascript">
function verif(){
if ((document.form1.textfield.value =="")||(document.form1.textfield2.value =="")){
alert ("Il faut remplir tous les champs.");
return false;}
else
{return true;}
}
</script>

<!--<link rel="stylesheet" type="text/css" href="style.css" />--!>

<style type="text/css">
<!--
.Style1 {color: #FFFFFF}
.Style2 {
font-family: Arial, Helvetica, sans-serif;
font-weight: bold;
font-style: italic;
}
.Style3 {
font-family: Geneva, Arial, Helvetica, sans-serif, "Adobe Garamond Pro", "Adobe Caslon Pro Bold", "Adobe Caslon Pro"
}
.Style6 {color: #999999; }
-->
</style>
<style type="text/css">
<!--
.Style1 {font-family: Georgia, "Times New Roman", Times, serif}
.Style2 {color: #FFFFFF}
.Style3 {
font-family: Geneva, Arial, Helvetica, sans-serif, "Adobe Garamond Pro", "Adobe Caslon Pro Bold", "Adobe Caslon Pro";
font-weight: bold;
font-style: italic;
font-size: 14px;
}
a:link {
color: #FFFFFF;
text-decoration: none;
}
a:visited {
text-decoration: none;
color: #FFFFFF;
}
a:hover {
text-decoration: underline;
color: #FFFFFF;
}
a:active {
text-decoration: none;
color: #FFFFFF;
}
.Style10 {
font-size: 14px;
color: #FFFFFF;
font-family: Geneva, Arial, Helvetica, sans-serif, "Adobe Garamond Pro", "Adobe Caslon Pro Bold", "Adobe Caslon Pro";
font-weight: bold;
font-style: italic;
}
.Style11 {color: #FFFFFF; font-weight: bold; }
.Style9 { color: #FFFFFF;
font-size: 10px;
font-style: italic;
}
.Style8 {font-style: italic; color: #FFFFFF; font-size: 18px;}
.Style12 {
font-style: italic;
color: #FFFFFF;
font-size: 18px;
font-family: Geneva, Arial, Helvetica, sans-serif, "Adobe Garamond Pro", "Adobe Caslon Pro Bold", "Adobe Caslon Pro";
font-weight: bold;
}
-->
</style>
</head>

<body>
<div align="center">
<table width="1024" height="609" border="1" cellspacing="0" cellpadding="0">
<tr>
<td colspan="2"> </td>
</tr>
<tr background="image.jpg">
<td height="90" colspan="2" nowrap="nowrap"><div align="right"><img src="image.jpg" width="800" height="88" /></div></td>
</tr>
<tr background="1.jpg">
<td height="37" colspan="2" nowrap="nowrap" class="menu"><div align="center" class="Style1">
<div align="center" class="Style2">
<div align="right" class="Style2 Style3">
<a href="home.php">HOME </a>| <a href="presentation.php">PRESENTATION </a>| <a href="operations.php">OPERATION</a> | <a href="contact.php">NOS CONTACTS</a> | <a href="sondage.php">SONDAGE</a> | <a href="lien.php">LIENS UTILES</a></div>
</div>
</div></td>
</tr>
<tr background="2.jpg">
<td width="147" height="478px" rowspan="2" nowrap="nowrap" class="bar"><p align="center" class="Style9">SI VOUS N'ETES PAS </p>
<p align="center" class="Style9">MEMBRE VEUILLEZ VOUS INSCRIRE</p>
<p align="center" class="Style11"><a href="INSCRIPTION.php">ICI</a></p></td>
<td width="871" height="445" nowrap="nowrap" class="contenu">
<form id="form1" name="form1" method="post" action="requeteselection.php" onclick="return verif()">
<p align="center" class="Style12">VEUILLEZ VOUS IDENTIFIER</p>
<p align="center" class="Style8">LOGIN
<input type="text" name="textfield" id="textfield" />
</p>
<p align="center" class="Style8">MOT DE PASSE
<input type="password" name="textfield2" id="textfield2" />
</p>
<p align="center" class="Style8">
<input type="submit" name="VALIDER" id="VALIDER" value="VALIDER" />
</p>
</form>
</td>
</tr>
<tr>
<td height="20" colspan="2" nowrap="nowrap" background="4.jpg" class="footer">
<div align="right"><span class="Style10"><a href="contact.php"> NOS CONTACTS</a> | <a href="sondage.php">SONDAGE</a> | <a href="lien.php">LIENS UTILES</a></span> </div></td>
</tr>
</table>
</div>
</body>
</html>

code requeteselection.php

<?php

include("connexion.php");?>

<?php
$logine=$_POST["textfield"];
$passe=$_POST["textfield2"];

$sql ="SELECT * FROM identification WHERE login='$logine' AND mot de passe ='$passe'";

$req = @mysql_query($sql);
$data = @mysql_fetch_array($req);

if(($logine==login)&&($passe==mot de passe))

echo" vous etes mr ou madame:$logine";

else

echo"vous netes pas membre";
?>

c ce ke jai pu faire pour la conditon jaimerai ke vous maidiez pour la faire con venablement

code connexion.php

<?php
$host="localhost";
$user="root";
$db="personne";
$password="";
mysql_connect($host,$user,$password);
mysql_select_db("$db");
?>

Configuration: Windows XP
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