Eclipse with CVS question: enterprise app with multiple modules

[shaikh.quader]

This is an Eclipse with CVS question. please consider the following
scenario:

I have an Enterprise Application project which has the following two
modules:
(1) An Web Application module (as a Dynamic Web Project)
(2) An EJB module (as a EJB project)

With Eclipse ... can anyone please tell me how I can share this complex
project to a CVS repository such a way that the entire project (with
subprojects) can be checked in/out in a single command. or any best
practice that does not break the integrity of the child projects?

I know how to do CVS backup for individual project but can't figure out
about such composite project.

Thanks in Advance.

SQ