I have a few question after I implement swfobject to my site.

Can someone explain to me in a really simple way..
what is the difference between those two scripts.

1.<script type="text/javascript">
swfobject.registerObject("myFlashContent", "8");
</script>

2.<script type="text/javascript">
var flashvars = {};
var params = { base: "."};
var attributes = {};
swfobject.embedSWF("http://url-to-video.swf", "video4div", "525", "345", "9.0.0", false, flashvars, params, attributes);
</script>

<script type="text/javascript" src="swfobject.js"></script>

<script type="text/javascript">
var so = new SWFObject("movie.swf", "mymovie", "200", "100", "7", "#336699");
so.write("flashcontent");
</script>

// my question is if we use the first 1 script.. then we cannot use 2 script right??

I tried to implement my site to use these script.. but still no luck..
Anyone can direct me some tutorial that really works on websites??

Say you want to publish multiple video on one page kinda deal.

thanks!