All the frontpage is laid out with modules so you'd need to republish modules and move them around, go to the following and this shows the modules:
http://shape5.com/demo/appwonder/?tp=1The scroll to top is added in the index.php file, you can remove it by looking for:
<a class="s5_scrolltotop" href="#s5_scrolltotop">[/url]
Regards,