Replacing AirPort card on my Macbook I have a White MacBook model 3,1 (bought in 2007).
My AirPort card seems to be busted. It has trouble picking up WiFi from a transmitter that is more than one meter away.
I know it's not an OS issue because I also have Ubuntu and Windows installed on this machine, and I'm having connectivity issues there too.  

I want to replace it, but before I buy a new one I wanted to know if there are different models available, maybe something newer and better. Or is a new card of the model I currently have (AirPort Extreme  (0x14E4, 0x88) according to my System Profiler) my only option?
And While on the topic, where is best to buy such card? is eBay ok?
I would not recommend using any other model or spec with your macbook, you could try ebay, but for service parts that you can trust you could also buy from www.welovemacs.com, who I can recommend.

Hope this is helpful.