I had to have a new hard drive installed and my old files were put in under a new file name, "Old". I've taken out all the program files under that but there is a lot of space taken up by old Windows files. I can't delete them because it says they are open in another program. I used SpaceSniffer to see how much room "Old" was taking up but couldn't see it. Is there a way to clear out that space? Thanks!