Quindi dovrei scrivere così:

<OBJECT classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0"
WIDTH=90% HEIGHT=90%>
<PARAM NAME=movie VALUE="filmato.swf">
<PARAM NAME=quality VALUE=high>
<PARAM NAME=bgcolor VALUE=#FFFFFF>
<EMBED src="filmato.swf" quality=high bgcolor=#FFFFFF
WIDTH=90% HEIGHT=90% TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?
P1_Prod_Version=ShockwaveFlash">
</EMBED></OBJECT>

Andando a mettere align=center nel body???