How do I / can I resize a flash video?

Hi - Is it possible to have a small video run on a web page? I've tried tweaking the params but it doesn't seem to make a difference.

I'm using Camtasia 7 - should I specify size prior to publishing?

Here's the output:

<td colspan="2"><p><div id="media">
<object classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" width="516" height="498" align="middle" id="csSWF">
<param name="movie" value="flash test_controller.swf" />
<param name="quality" value="best" />
<param name="bgcolor" value="#1a1a1a" />
<param name="allowfullscreen" value="true" />
<param name="scale" value="showall" />
<param name="allowscriptaccess" value="always" />
<param name="flashvars" value="autostart=false&thumb=FirstFrame.png&thumbs cale=45&color=0x1A1A1A,0x1A1A1A" />
<!--[if !IE]>-->
<object type="application/x-shockwave-flash" data="flash test_controller.swf" width="640" height="498">
<param name="quality" value="best" />
<param name="bgcolor" value="#1a1a1a" />
<param name="allowfullscreen" value="true" />
<param name="scale" value="showall" />
<param name="allowscriptaccess" value="always" />
<param name="flashvars" value="autostart=false&thumb=FirstFrame.png&thumbs cale=45&color=0x1A1A1A,0x1A1A1A" />
<!--<![endif]-->
<div id="noUpdate">
<p>The Camtasia Studio video content presented here requires a more recent version of the Adobe Flash Player. If you are using a browser with JavaScript disabled please enable it now. Otherwise, please update your version of the free Flash Player by <a href="http://www.adobe.com/go/getflashplayer">downloading here</a>.</p>
</div>

Thanks - James