fai così:

codice:
<input type="radio" name="radiobutton" value="0" onclick="this.form.action='pagina0.php';">numero00
<input type="radio" name="radiobutton" value="1" onclick="this.form.action='pagina1.php';">numero01
<input type="radio" name="radiobutton" value="2" onclick="this.form.action='pagina2.php';">numero02
ciao