segmenting a CVS repository

[Tate Austin]

I'm used to using CVS thrugh GUI's (eclipse, etc) and I'm now in an environment where we are command line bound and I have a sizeable project in a CVS repository.  When I make one change to one file, it is simply too time consuming to do cvsupdate from the CLI to just get a few files.  Is there an alternative to breaking the project up into seperate modules, like a more appropriate command for the situation?  Or have I just named the reason for modules?:-)