Código simples 
Vá lá em Componentes/Banner
Ao criar um novo banner, defina os parâmetros que você precisar e no campo
<object width=”950” height=”225” codebase=”http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0″ classid=”clsid:d27cdb6e-ae6d-11cf-96b8-444553540000″>
<param name=”wmode” value=”transparent”/>
<param name=”movie” value=”images/banners/nomedobanner.swf“/>
<param name=”quality” value=”high”/>
<embed width=”950” height=”225” wmode=”transparent” src=”images/banners/nomedobanner.swf” quality=”high” pluginspage=”http://www.macromedia.com/go/getflashplayer” type=”application/x-shockwave-flash”/>
</object>