How to checkout only modules from CVS?

I'm using TortoiseCVS and I don't need to checkout the whole, gigantic contributions directory...only the modules directory and all modules contained within. I've tried variations of the <directory/to/module> syntax found on http://drupal.org/node/321 but get nothing but errors.

Does anyone know how to set up Tortoise to only pull down modules? Any help would be greatly appreciated.

Thanks in advance,
MJ - SavoryMedia.com