kernel source (file name and location)

[M.Forbes]

I need to know what the name and location would be as for the kernel-source in order to get my Ethernet card working. I was getting an error in line 27 that the kernel source was not able to be found. I was able to find that I have to adjust the following line of code:   #ksrc :=/usr/sr/ksrc/RedHat/7.2/linux-2.4.7-10alt-ent   I am currently running the woody 3 distro of Debian with kernel 2.4.18. Can someone throw me a clue? (I tried #ksrc :=/usr/src/kernel-source-2.x.xx but there are no files that are showing in my usr directory or the subdirectories there of )   Thanks Mark