Check out Drupal Contributed Module from CVS

This will checkout a Drupal contrib module.

-d module_name is the name of the folder that it will be added to (put in path if necessary)

DRUPAL-5--X-X - This should be the version of the module. For example, if the latest stable version is 5.x-1.4, then change this to DRUPAL-5--1-4

contributions/modules/module_name - change module_name to the module name

cvs -z6 -d:pserver:anonymous:anonymous@cvs.drupal.org:/cvs/drupal-contrib checkout -d module_name -r DRUPAL-5--X-X contributions/modules/module_name