Combine external JS

Hello all,

How can i combine the following JS into one JS in order to increase page speed ?

<script type="text/javascript" src="http://www.myblog.com/wp-content/themes/twentyten/js/jquery-1.2.2.pack.js"></script>
<script type="text/javascript" src="http://www.myblog.com/wp-content/themes/twentyten/js/jscroller2-1.61.js"></script>
<script type="text/javascript" src="http://www.myblog.com/wp-content/themes/twentyten/js/jquery.min.js"></script>
<script type="text/javascript" src="http://www.myblog.com/wp-content/themes/twentyten/js/jquery.js"></script>
<script type="text/javascript" src="http://www.myblog.com/wp-content/themes/twentyten/js/jquery.carouFredSel-4.2.0-packed.js"></script>

I don’t know what i should put in the .htaccess and where putting my combine.php ?

Thnx a lot!