Picked up a non-operating M1000 - It came complete except for no 9V P.S., which I could supply. And it seems to work fine with ethernet, but not with wi-fi. Examination of the wi-fi card that came with it showed a sharp-ish dent in the back of the card. I replaced this card with another yanked from a different M1000, and it connected wirelessly with ease. Conclusion: The dented Wi-Fi card is damaged and must be replaced.
So, any ideas other than scouring eBay and CL? Is this same card used anywhere else under a different name perhaps? I'll appreciate any suggestions.