That's what I got, but they are 2.6.11 with Debian patches to 2.6.11-1.

What I did find was that I needed to copy the /usr/src/kernel-headers-2.6.11 off the cd to my hard drive, apt-get install kernel-kbuild which installed 2.6.3 kbuild, and in order to get some way I needed to copy the scripts directory into the kernel-headers directory. Managed to get the module to build but I'm now experiencing difficulty in loading them