Please, see this
http://packages.debian.org/squeeze/i386/linux-image-2.6-amd64/download
amd64 or i386?
# uname -a
Linux desktop 2.6.32-5-*686* #1 SMP Tue Sep 13 22:14:59 UTC 2011 i686
GNU/Linux
# apt-cache search linux-image |grep *amd64*
linux-image-2.6-*amd64* - Linux 2.6 for 64-bit PCs (meta-package)
linux-image-*amd64* - Linux for 64-bit PCs (meta-package)
nvidia-kernel-2.6.32-5-*amd64* - NVIDIA binary kernel module for Linux
2.6.32-5-amd64
linux-headers-2.6.32-5-*amd64* - Header files for Linux 2.6.32-5-amd64
linux-image-2.6.32-5-*amd64* - Linux 2.6.32 for 64-bit PCs
