I must say I love this free utility from here: http://windirstat.info/
WinDirStat takes a snapshot of how your hard disk is being used, and gives you a graphical interface for deleting chunks of data you don’t need anymore. It’s great, it’s free, it’s easy to use, and it’s even got eye-candy. I managed to find all sorts of files that were tucked away that no longer needed to sit on the laptop, for instance. Get a copy today and get yer hdd cleaned up before winter hibernation kicks in.