Adding and Removing Linked Symbols Using AS

I asked a question regarding this yesterday, to no avail. I’m still looking for suggestions. So, All I’ll ask, is how do you programmatically add and remove your linked library symbols to and from your movie? in an orderly fashion. I’m not looking for like the generic answer of var whatever:whatever = new Whatever();… I’m looking for a technique that helps tween the instance in, organize which instances are added, and tweens out and removes at the proper event. Again, I know this is vague, but if you have a second… anything would help. thanks…

or you could check my last post to get a better idea of what i’m looking of doing… it’s called website page change or something like that.