DEBIAN:/home/orphemal# apt-cache search header | grep 2.6.18 | more
linux-headers-2.6.18-4 - Common header files for Linux 2.6.18
linux-headers-2.6.18-4-486 - Header files for Linux 2.6.18 on x86
linux-headers-2.6.18-4-686 - Header files for Linux 2.6.18 on PPro/Celeron/PII/PIII/P4
linux-headers-2.6.18-4-686-bigmem - Header files for Linux 2.6.18 on PPro/Celeron/PII/PIII/P4
linux-headers-2.6.18-4-all - All header files for Linux 2.6.18
linux-headers-2.6.18-4-all-i386 - All header files for Linux 2.6.18
linux-headers-2.6.18-4-amd64 - Header files for Linux 2.6.18 on AMD64
linux-headers-2.6.18-4-k7 - Header files for Linux 2.6.18 on AMD K7
linux-headers-2.6.18-4-vserver - Common header files for Linux 2.6.18
linux-headers-2.6.18-4-vserver-686 - Header files for Linux 2.6.18 on PPro/Celeron/PII/PIII/P4
linux-headers-2.6.18-4-vserver-k7 - Header files for Linux 2.6.18 on AMD K7
linux-headers-2.6.18-4-xen - Common header files for Linux 2.6.18
linux-headers-2.6.18-4-xen-686 - Header files for Linux 2.6.18 on i686
linux-headers-2.6.18-4-xen-vserver - Common header files for Linux 2.6.18
linux-headers-2.6.18-4-xen-vserver-686 - Header files for Linux 2.6.18 on i686
linux-kbuild-2.6.18 - Kbuild infrastructure for Linux 2.6.18