See
http://dban.sourceforge.net/
http://www.heidi.ie/eraser/ (uses dban - check out the FAQ link) or http://www.sysinternals.com/ntw2k/source/sdelete.shtml
http://staff.washington.edu/jdlarios...e/install.html

The links came from this page http://www.thefreecountry.com/securi...redelete.shtml