FMS 3 and JW Player

Hello, I have been trying to get an answer to my questions regarding FMS 3 but to no avail...hopefully someone can help me here..

I have a flash file and use JW Player as my player...I can stream inside my network. I have a changing IP address so I assigned 192.xx.x.xx to my server..

I use Apache for web server. I use the code for linking to the file and works great inside my network...How can i get this to play outside my network?

here is how the player is setup:

<script type='text/javascript' src='swfobject.js'></script>
<script type='text/javascript'>var s1 = new SWFObject('player.swf','player','500','400','9');
s1.addParam('allowfullscreen','true');
s1.addParam('allowscriptaccess','always');
s1.addParam('flashvars','streamer=rtmp://192.xx.x.xx/vod&file=Wedding.flv&image=preview1.jpg');
s1.write('preview');
s1.addParam('salign','sr')
</script>

Any help would be great...