In my computer we have 2 harddrives: one that came with the computer, and another from our old computer that crashed. They are named C and D. The C drive is the primary that we run all our programs off of, and where all the files save onto. D drive is where I store music and videos. Thats all it does. Drive D still has a bunch of program files like IE from the old computer, can i delete these or do i still need them? Thanks.