hi i have tried

apt-get install kernel-headers-`uname -r`

but it doesnt work i have also tried

apt-get install kernel-headers-2.6.18-6-amd64

and this doesnt work as it cannot find the package, i have selected all the selectable repostories also when i google for thoes kernel headers i get nothing. I have tried looking for the kernel source on the debian website but am probably lookin in the wrong place cld u give me a link?? cheers