I'd just like to add that if you use Emacs there are built in CVS controls. It makes it a lot easier to work in your source tree, and then just hit C-x v i to register a file when you create one, Check out:

http://www.emacswiki.org/cgi-bin/wiki/PclCvsTips
http://www.emacswiki.org/cgi-bin/wiki/PclCvsTips