The Davis Square Community

I have 2 rather elderly Macs (a sapphire iMac and a gray eMac) that are taking up valuable space in my apartment, and that I would love to donate to anyone who can find a good use for them; problem is, I need to wipe the hard drives, and have neither the knowledge of how nor the time in which to do such a thing. Would anyone be willing to help me out with (1) the HD wiping, and/or (2) finding a new home for them? #1 needs to happen before #2, of course, and while I can't afford much in the way of financial compensation (having been laid off at the end of April and temping sporadically at the moment), I can try to scrape up something, and there's always the usual bribe of seriously lethal baked goods...

Thanks in advance for any help!