How to commit a directory in CVS?

I know CVS is pretty old but have to use it in company. Recently we have upgraded a library to the latest version.

Now we want to replace the old library with new library.

So basically we want to first rename the old library in CVS and then commit new library.

In short

1. In CVS server: Rename folder /.../js/library to /.../js/library_legacy.


2. To CVS server: Commit /.../js/library to /.../js/.