fsck on FAT32 filesystem?

[Thomas Mueller]

Regarding the security of various methods of deleting data, I just saw in Office Depot's online ad for the coming week, which is the reason I couldn't post this any earlier:

Need to discard an old PC but worried about protecting your identity?

Let us securely erase your personal files and pictures for only $49.99.

We use the only permanent data deletion software certified by NIAP, used by the Department of Defense and Fortune 500 Companies.

(quoting verbatim but formatting not preserved)

URL was 

http://officedepot.shoplocal.com/OfficeDepot/BrowseByPage?storeid=2501355&promotionviewmode=1&promotioncode=OfficeDepot-120722&listingid=0&sneakpeek=N#

Personally, I'd save the money, time and gasoline too, and use dd if=/dev/zero of=/dev/(disk-to-be-deleted) bs=1M

from FreeBSD or other (quasi)-Unix OS.

Or if that's not good enough, DBAN which is on the System Rescue CD (sysresccd.org).

I suppose the average MS-Windows user is not aware of these money-saving methods.

Tom