Prevent autoplay when embedding a swf - IE autoplays, all other browsers don't

Question

Hi, I'm trying to stop a swf from auto-starting on page load - for firefox, safari etc, this works fine setting the autoplay parameter to false, but in IE the swf plays on page load.

This is my code, any help greatly appreciated!

<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="590" height="397">
        <param name="movie" value="media/flash/conferences.swf" />
    <param name="autoplay" value="false" />
        <!--[if !IE]>-->
        <object type="application/x-shockwave-flash" data="media/flash/conferences.swf" width="590" height="397">
        <!--<![endif]-->
          <p>Alternative content</p>
        <!--[if !IE]>-->
        </object>
        <!--<![endif]-->
      </object>