Fatto. Sono riuscito a fare anche il Frame inferiore. Questo tutto il codice:


<!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 content="it" http-equiv="Content-Language" />
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
</head>

<body>

<frameset rows="124,*,100">
<frameset cols="*">
<frame src="Superiore.html" name="FrameSuperiore" scrolling="NO" noresize>
</frameset>

<frameset cols="*">
<frameset cols="132,*,135">
<frame src="Sinistra.html" name="FrameSinistro" scrolling="NO" noresize>

<frame src="Centro.html" name="FramePrincipale">
<frame src="Destra.html" name="FrameDestro" scrolling="NO" noresize>
</frameset>
</frameset>

<frameset cols="*">
<frame src="Inferiore.html" name="FrameInferiore" scrolling="NO" noresize>
</frameset>

</frameset>

</body>

</html>