Código:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="es" lang="es">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>TU PAGINA ACA</title>
<link href="css/style.css" rel="stylesheet" type="text/css">
<script src="../js/flashobject.js"></script>
</head>
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="100%" height="100%" id="myfile" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="swf/home.swf" />
<param name="quality" value="high" />
<param name="scale" value="noscale" />
<param name="bgcolor" value="#ffffff" />
<param name="wmode" value="transparent" />
<param name="flashvars" value="id_usuario=<? echo $id_usuario; ?>" />
<embed src="swf/home.swf" width="100%" height="100%" align="middle" quality="high" scale="noscale" bgcolor="#ffffff" name="home" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" wmode="transparent" />
</object>
<div id="Layer1"></div>
</body>
</html>
aca tienes el codigo de un php para ver tu flash fullscreen en cualquer resolucion espero te haya servido saludos.