My friend needs to get rid of an older household PC. It's a Pentium 2, and she wants me to completely nuke the hard drive. (It's a IDE hard drive.) I remember there was a program for repeatedly rewriting stuff to it - any one got any recommendations? I intend to hook up the HDD to my laptop via a hard drive enclosure, but I just want an easy program to nuke it. Also, my mother bought a refurb'ed laptop. A Thinkpad - T61. What's a good anti-spyware software?