linux-restricted-modules-2.6.8.1-3-amd64-xeon 2.6.8.1.3-4 (amd64 binary) in ubuntu warty

Non-free Linux 2.6.8.1 modules on Intel x86_64
 This package provides restricted modules for Linux version 2.6.8.1 on
 Intel x86_64.
 Currently the following modules are included:
  - nvidia
 .
 These modules are "restricted" because they are not available under a
 completely Free licence.