Done with /usr/src/nvidia-kernel-2.6.18-4-k7_1.0.9755-1+2.6.18.dfsg.1-12_i386.deb .
dpkg -Ei /usr/src/nvidia-kernel-2.6.18-4-k7_1.0.9755-1+2.6.18.dfsg.1-12_i386.deb
(Reading database ... 138695 files and directories currently installed.)
Preparing to replace nvidia-kernel-2.6.18-4-k7 1.0.8776+6 (using .../nvidia-kernel-2.6.18-4-k7_1.0.9755-1+2.6.18.dfsg.1-12_i386.deb) ...
Unpacking replacement nvidia-kernel-2.6.18-4-k7 ...
Setting up nvidia-kernel-2.6.18-4-k7 (1.0.9755-1+2.6.18.dfsg.1-12) ...

Reading package lists... Done
Building dependency tree... Done
The following packages will be upgraded:
  nvidia-glx
1 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Need to get 4214kB of archives.
After unpacking 2507kB of additional disk space will be used.
Get: 1 http://debian.mirror.rafal.ca unstable/non-free nvidia-glx 1.0.9755-1 [4214kB]
Fetched 4214kB in 6s (660kB/s)
(Reading database ... 138695 files and directories currently installed.)
Preparing to replace nvidia-glx 1.0.8776-4 (using .../nvidia-glx_1.0.9755-1_i386.deb) ...
/var/lib/dpkg/info/nvidia-glx.prerm: line 24: /etc/init.d/nvidia-glx: No such file or directory
Unpacking replacement nvidia-glx ...
Setting up nvidia-glx (1.0.9755-1) ...

Configuration file `/etc/init.d/nvidia-glx'
 ==> Deleted (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : background this process to examine the situation
 The default action is to keep your current version.
*** nvidia-glx (Y/I/N/O/D/Z) [default=N] ? Y
Installing new version of config file /etc/init.d/nvidia-glx ...
Creating NVIDIA TLS links... done.

Package `xserver-xor' is not installed and no info is available.
Use dpkg --info (= dpkg-deb --info) to examine archive files,
and dpkg --contents (= dpkg-deb --contents) to list their contents.
/usr/sbin/dpkg-reconfigure: xserver-xor is not installed
slutb0x:/boot# apt-get -t unstable install module-assistant nvidia-kernel-source && m-a prepare && m-a a-i nvidia && apt-get  -t unstable  install nvidia-glx && depmod -a && modprobe nvidia && dpkg-reconfigure xserver-xorg
Reading package lists... Done
Building dependency tree... Done
module-assistant is already the newest version.
nvidia-kernel-source is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Getting source for kernel version: 2.6.18-4-k7
Kernel headers available in /lib/modules/2.6.18-4-k7/build
apt-get install build-essential
Reading package lists... Done
Building dependency tree... Done
build-essential is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

Done!