hii neetesh
you can use below code to display flash file in your application.File format should be .swf means flash file.
so try this below code,paste it in your design page
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000">
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,65,0"
align="top" width="432" height="240">
<param name="movie" value="img/sidebanner.swf" />
<param name="menu" value="false" />
<param name="quality" value="high" />
<embed src="img/sidebanner.swf" menu="false" quality="high" width="432px" height="240" name="flash" align="top" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer">
</embed></object>
here you have to change path and give you file name path.
hope it will work for u
thanx