Well, when you download stuff for Life Stories you put it in
My Documents\Electronic Arts\The Sims™ Life Stories\Downloads. If you do not have a download folder you will have to create one or run Bodyshop and then move the Download folder to where I just indicated.
You can download the Inteenminater or
WooHoo Teens by JenFlower from http://box156.bluehost.com/~aestudi1/forums/inteenimater/index.phpHowever, I would
NOT recommend you use it for Life Stories as both are made for The Sims 2 and are not compitable with Life Stories, and will most likely crash your game.
If you have the Sims 2 or expansions, you download it to
My Documents\EA Games\The Sims 2\Downloads. However, if your question is for the reg Sims 2, you should really be posting in the
General Sims 2 Help section.
http://www.insimenator.net/forumdisplay.php?f=43Hope this helps. 
