You'll probably need to recompile or upgrade your kernel before you'll be able to compile the driver...
However, netgear network hardware is quite well supported natively in current kernels (as far as I know) - have you tried getting it going without any special drivers? I. e. just plug it in, switch on, boot up and see what happens?
If the card is installed, and you have booted up what does
report?
And
?