Copy this code and paste it in your HTML
<ul id="access">
<li><?php
if($user->uid>0){
//logged in
echo "<span>Welcome! $user->name </span>" .l
("My Account",'user') .'</li>';
}
else {
echo l
('Sign up','user/register') .'</li>';
echo '<li>' .l
('Login','user') .'</li>';
}
?>
</ul>