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nethead@monica:~$ sudo apt-get install binutils build-essential kernel-headers
Reading package lists... Done
Building dependency tree... Done
binutils is already the newest version.
build-essential is already the newest version.
Package kernel-headers is a virtual package provided by:
  kernel-headers-2.4.27-2-k7-smp 2.4.27-12
  kernel-headers-2.4.27-2-k7 2.4.27-12
  kernel-headers-2.4.27-2-k6 2.4.27-12
  kernel-headers-2.4.27-2-686-smp 2.4.27-12
  kernel-headers-2.4.27-2-686 2.4.27-12
  kernel-headers-2.4.27-2-586tsc 2.4.27-12
  kernel-headers-2.4.27-2-386 2.4.27-12
  kernel-headers-2.4.27-2 2.4.27-12
You should explicitly select one to install.
E: Package kernel-headers has no installation candidate
nethead@monica:~$