Newbie cvs question - large project

[address@hidden]

1.We are currently working on a large project now. As the project is
currently under way, we are constantly making changes to the codes,
with different people changing different part of the codes. In this
situation, what is the best way to start implementing CVS? I was
thinking of establishing a reference version, create a new module in
CVS for this version, and have everybody checks out the version and
start working from there. Is there a better way to do this?

2. As our project is very large, with millions of source files
(literally), performing cvs release and checking out the whole project
everytime are certainly not feasible. To overcome this, I was thinking
of letting each programmer works on his/her own part of the code, so
after the initial checking out of the whole project (as described in my
first question), each programmer will only modify/commit his/her own
codes. The drawback of this is of course nobody will have the complete
newest version of the project. Is there a better way to do this?

Thanks!