A ver, te copio y pego:
Código HTML:
<!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>Documento sin título</title>
</head>
<style type="text/css">
#formulario { font:11px arial; width:460px;}
#formulario form { margin:0px; padding:0px; }
#formulario fieldset { border:1px solid #ccc; }
#formulario legend { font-weight:bold; color:#666; }
#formulario label { font-weight:bold; display:block; width:100px; float:left; }
#formulario input, select, textarea { font:11px arial; background-color:#ddd; border:1px solid #666; }
#formulario input:focus, select:focus, textarea:focus { background:#FFFFB9}
#formulario br { display:block; margin-bottom:10px; clear:both; }
</style>
<body>
<div id="formulario">
<form action="#" method="post" name="registro">
<fieldset>
<legend>Datos Personales</legend>
<label for="formnombre">Nombre:</label>
<input type="text" name="nombre" id="formnombre" size="40" />
<br />
<label for="formapellidos">Apellidos:</label>
<input type="text" name="apellidos" id="formapellidos" size="40" />
<br />
</fieldset>
<br />
<fieldset>
<legend>Otros Datos:</legend>
<label for="formusu">Usuario:</label>
<input type="text" name="usuario" id="formusu" size="40" maxlength="20" />
<br />
<label>Password:</label>
<input type="password" name="password" id="formpass" size="40" maxlength="20" />
<br />
<br />
<input type="submit" name="registrarse" value="registrarse" />
</fieldset>
</form>
</div>
</body>
</html>