Sanitizing your old computer? A hammer or drill will be handy

Q: I replaced an old laptop with a new one, and now the old one is sitting around collecting dust. I'd like to dispose of it by giving it to one of those computer recycling companies near me. Thing is, my old laptop was used to create tax returns and has lots of obsolete files still on it and other sensitive personal information. What should I do to sanitize the hard drive before taking the laptop to the recycle center? A: When disposing of an unused or unwanted computer, scrub the hard drive so