How much could I sell my Nikon D3000 for?

I got it a little over a year ago from Samy's camera. I bought the kit with the 18-55mm lens and 55-200mm lens. I have the manual and the software disk still. Also the receipt. I purchased it for $758 and it comes with a bag too. The camera itself has a little scratch on the screen but other than that it looks brand new. How much would all this sell for?

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Tether nikon d40 with lightroom 3?

I have tried several times but my camera will not show up? I had no problem when using apple aperture all i did was connect usb and turn on camera, then tell aperture to tether shoot… However i can not get lightroom to do so…

can someone tell me what im missing and how to shoot tethered?

thanks
Added (1). Ok thanks,

i use to do my portrait sessions tethered through aperture and was hopping to do the same in lightroom 3.

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