http://www.jam-software.com/treesize_free/
i only need to clear out about 300 gigs or at least find out what is taking up 400/1000 gigs
TreeSize Free can be started from the context menu of a folder or drive and shows you the size of this folder, including its subfolders in an Explorer-like fashion. Large folders can be identified at a glance thanks to the gradient bar displayed in the background.