What i did was i set my FLASH ARCADE forum so that the ONLY code it allows is html. Then here's an example of the code i used
<object classid="clsid

27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,30,0" width="450" height="450">
<param name=movie value="http://www.urbandynasty.com/forums/flash/asteroids.swf?url=yoursite.com">
<param name=quality value=high>
<embed src=http://www.urbandynasty.com/forums/flash/asteroids.swf?url=yoursite.com" quality=high pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="450" height="450" menu="0">
</embed>
</object>