Falling objects I'm not to sure about, I never really found them all that great looking so never bothered to use them I suppose all you can do is try doing it and if it doesn't work then I guess it doesn't work.
Next placing your whole layout in a scrollbox? I don't quite know what you mean by this I mean if you want to just have one scrollbox in the middle of your profile then just use a normal div thing:
CODE
<div class="content" style="position: absolute; left:000px; top:000px; width:000px; height:000px; overflow: auto;"><center>
CONTENT FOR DIV.
</div>
If that isn't what you want could you draw up an example or show one, thanks.