the "debian way":
1- get packages for nvidia drivers:
apt-get install nvidia-kernel-src nvidia-glx-src
these packages doesn't contain the drivers, but they will assist download and compilation.
packages in woody install version 2880 of nvidia drivers.
if you want the latest version, get debs from here:
and install them with dpkg -i
follow instructions in:
getting the drivers, compiling them: all is automatic! and it makes packages (easily upgradable or removable)
note you must have kernel headers or source for your running kernel to compile the kernel module .
then modify your XF86Config-4 file with vi , your favorite editor
nvidia readme is in: /usr/doc/nvidia-glx/README.gz)
note that kernel-package contains great tools (make-kpkg) to compile kernels and make debs with them.