You should make sure you have access to the repository and make a local copy of it, as explained in the first 4 steps of the FAQ entry How do I Start using the CVS repository?
Once you have a local copy of your empty repository, copy there the whole tree for your project and import it to the repository with:
- cvs add *
- cvs ci *
You will get a few warnings about files which should not be committed, because this is really a "brute force" approach. If you want to avoid those warning messages, you can first add directories and then add and commit the files in them. Or use the "cvs import" command (its use is a bit more complex for this simple FAQ; please read the cvs manual page).