Macbook won't charge: only green light

Hi everyone,

I just got back from a two week vacation to find that my black Macbook isn't charging. When I put the charger head into the laptop, the light remains green, and the battery isn't charging. I ran a CoconutBattery diagnosis on the machine and got these results:

http://i.imgur.com/mMobh.png

I'm not exactly clear on how to interpret these results, but I believe it's saying that the battery doesn't have any capacity for charging. Will buying a new battery solve the problem? I'm not sure if Apple sells the batteries for the older Macbooks now, either.

Thanks for any help!
Josh

Okay, thanks. Can you recommend any sites to buy one from?