This project's SourceForge CVS repository can be checked out through anonymous (pserver) CVS with the following instruction set. The module you wish to check out must be specified as the modulename. When prompted for a password for anonymous, simply press the Enter key.
cvs -d:pserver:anonymous@cvs.Evolution.sourceforge.net:/cvsroot/Evolution login
cvs -z3 -d:pserver:anonymous@cvs.Evolution.sourceforge.net:/cvsroot/Evolution co modulename

Updates from within the module's directory do not need the -d parameter.

Developer CVS Access via SSH

Only project developers can access the CVS tree via this method. SSH1 must be installed on your client machine. Substitute modulename and developername with the proper values. Enter your site password when prompted.
export CVS_RSH=ssh
cvs -z3 -ddevelopername@cvs.Evolution.sourceforge.net:/cvsroot/Evolution co modulename

Here you can browse the cvs repository.