Permanently delete data from your hard drive

NY Times has an article on (many times unknown fact) how simply deleting data from your hard drive dosen't really delete it. This can be a problem, when you are getting rid of your old computer or are trying to erase any evidence :-) The article provides some good tips and free program links. Most notable is the FREE windows program Dariks Boot and Nuke.

[Deleted but Not Gone NYT]
[Darik's Boot and Nuke]