This article might help also in opening large sql dumps. http://codingpad.maryspad.com/2007/06/19/working-with-a-sql-dump-file-a-newbie-tutorial/ It shows you how to do it from the MySQL command line, works great for large sql dump files.
BigDump is definetly the way to go. I've had to restore a several hundred MB Vbulletin database and without BigDump it just wasn't working. Even trying to copy/paste sections of the SQL would have taken hours (done it before).