I found this script very useful. It allows you to restore a large Database through your browser. Great if you can't get shell access (great for shared servers). I did not write this, All credit goes to the author - Alexey Ozerov.
BigDump ver. 0.32 from 2010-04-03
Staggered import of an large MySQL Dump (like phpMyAdmin 2.x Dump)
Even through the webservers with hard runtime limit and those in safe mode
Works fine with Internet Explorer 7.0 and Firefox 2.x
Author: Alexey Ozerov (alexey at ozerov dot de)
AJAX & CSV functionalities: Krzysiek Herod (kr81uni at wp dot pl)
Copyright: GPL (C) 2003-2010
More Infos: http://www.ozerov.de/bigdump.php
Hope you find it useful!