Which Kernel for 32bit Debian on ADM64 CPU

[Chaim Keren Tzion <chaim@intercomp.co.il>]

Hi,

I would like to run 32 bit Debian Testing/Larry on my AMD Athlon(tm) 64 X2 
Dual Core Processor 4400+ CPU.

Which kernel should I choose? I switched from the default 2.6.18-4-486 
to 2.6.18-4-amd64 but I am having trouble compiling an Nvidia module. I get:
ld: Relocatable linking with relocations from format elf32-i386 
(/usr/src/modules/nvidia-kernel/nv/nv-kernel.o) to format elf64-x86-64 
(/usr/src/modules/nvidia-kernel/nv/nvidia.o) is not supported

TIA,
Chaim