Quoting Brian (lxy at cloudnet.com):
> I have a general question, I'm sure when I hear the answer I'll feel
> stupid, but my brain isn't helping me much this morning.  Let's say I have
> network card X in my machine.  I'd like to know what kernel versions
> support it and which don't.  Is there a nice indexed list of hardware
> compatibility for the kernel somewhere?

http://www.linuxdoc.org/HOWTO/Hardware-HOWTO/

Each distribution also has there own list

Redhat 
  http://hardware.redhat.com/hcl/

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