Choosing where you want your empty movie clips

hello,

I want to create a full flash site. I have my main back ground and I have an area where I want to create an Empty Movie Clip so that I can load other swf files to act as link in website. What tool do I use (or code to write) to select a rectangular area where I want an Empty Movie clip to show other Movies Clips and content I have for my page. If this is confusing I’ll try it again.

Thanks