Automatic CVS Update of Contributed modules

Hi

I want help in automatic update of contributed modules in my home computer which i use as testing and playing ground for Drupal.

I have Tortoise CVS installed and i can update Drupal from CVS when ever new version is updated.

I want to update contributed modules with CVS instead of downloading each of them manually to my sites/all/modules directory

I cannot figure out how to do this. I want to update all contributed modules which i have installed all in one go with CVS if any update is available for them.

PS : I have read following document http://drupal.org/node/321

Thanks