Hi guys, I've got an absolutely ancient PC sat upstairs in the attic. I'm wanting to get rid of it, or maybe donating it to that charity, Computers4Africa, and I want to completely wipe the hard-drive so there's no details left on it. Now it isn't connected to the Internet, so I can't download any of the programs I see when I search for advice on Google. Is there anything I can do, just directly with the machine, to get rid of everything stored on there? Bear in mind, I'm okay with computers, but nothing technical, otherwise my head'll explode. Thanks in advance.