Windows has a command called cipher that can be used to wipe free space.
http://www.maximumpcguides.com/how-t...letely-erased/

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"Mark" <me@home> wrote in message
news:eWjzPnh5HHA.5160@TK2MSFTNGP05.phx.gbl...
> Anyone know of a free wiper for Vista 32-bit? I used to use something
> called "Eraser" in XP but can't seem to find it now!
>
> Mark