nvidia building from source (2.6.15)

[Sebastian Haase <haase@msg.ucsf.edu>]

Hi,
I'm running kernel version 2.6.15 from backports (2.6.15-1-amd64-k8-smp)
Then I tried to build the nvidia kernel module after dpkg -i
linux-headers-2.6.15-1...(also from backports)
when trying to build the nvidia-kernel-source (following the instructions 
in /usr/share/doc/nvidia-kernel-source
I got: cannot open perl script 
"/usr/src/linux-headers-2.6.15-1/scripts/setlocalversion"
The "scripts" folder seems not to exist in linux-headers anymore (vs. for 
older kernels  the package was called: kernel-headers)

Then I tried the module-assistant: it first went all well until
"(EE) Failed to load module "nvidia" (module does not exist, 0)
in /var/log/XFree86.0.log
Trying a manual "modprobe nvidia" says:
root@omx:/lib/modules# modprobe nvidia
nvidia: Unknown symbol register_ioctl32_conversion
nvidia: Unknown symbol unregister_ioctl32_conversion
FATAL: Error inserting nvidia 
(/lib/modules/2.6.15-1-amd64-k8-smp/nvidia/nvidia.
ko): Unknown symbol in module, or unknown parameter (see dmesg)

(I was wondering were the nvidia-glx-ia32 might come in - but it did not fix 
the problem...)

Then I decided to go for a new version of the nvidia  - 7174 from sarge might 
be rather old anyway ...
so I googled and found 
http://people.debian.org/~rdonald/nvidia/dists/unstable/nvidia-graphics-drivers/binary-amd64/

BAD idea !! In deselect it now complains that libc6 needs >= 2.3.5-1
So: I hope I can undo this ...

Any hint on where I can get a working (new) nvidia module for (any) rather new 
kernel  !?

Thanks,
Sebastian Haase