having some problems with php please help?

[James B]

ok heres my code
<?php //beginning tag
$host = localhost
$dbuser = root
$dbpass = root
$dbname = user

$connection = mysql_connect($host,$dbuser,$dbpass);
$db = mysql_select_db($dbname,$connection);

//grab data from form
$name = $_POST[username];
$pass = $_POST[password];
$pass_conf = $_POST[pass_conf];
$email = $_POST;
$ip = $_POST[ip];


//if else (else if)
if($name == false || $pass == false || $pass_conf == false ||$email == false)(
echo "please fill in all the required fields";
);
if($pass != $passconf)(
)else (
$connection = mysql_connect($host,$dbuser,$dbpass);
$db = mysql_select_db($dbname,$connection);
$sql = "INSERT INTO user (username,password,email,ip) VALUES ($name, $pass, $email, $ip)
$result = mysql_query($sql);
echo "Thank you for your registration to Obsos.com";
);

?>




and next is the form part

<?php
$IP = $_SERVER['REMOTE_ADDR'];
?>
<form name=reg action=do_reg.php method=post>
<table border=0 cellspacing=0 cellpadding=2>
<tr><td>
Username: <td><input type=text name=user><br/>
<tr><td>
Password: <td><input type=password name=pass><br/>
<tr><td>
Confirm Password: <td><input type=password name=pass_conf><br/>
<tr><td>
Email: <td><input type=text name=email><br/>
<tr><td colspan=2>
<input type=hidden name=ip value'<?php echo $IP?>'>
<input type=submit value='register'>
</form>


i seem to get this error everytime:- Parse error: parse error in C:\wamp\www\reg\do_reg.php on line 3
added the 4 semi colons but now im getting
Parse error: parse error in C:\wamp\www\reg\do_reg.php on line 20
ive checked it for semi colons though