In the IDE, no special setup is necessary in order to use CVS. You need only to check out the files located in a remote repository to a local working directory on your system. In the process of checking out, the IDE automatically registers the working directory where your local copies of version-controlled files and their status information will be stored.
If you have previously checked out files to a local working directory on your system using another VCS executable or the command line, you can still work with the files using the IDE's CVS support. The IDE automatically recognizes the files as versioned files, enabling you to call CVS commands on them. See Checking Out Files from a Remote Repository for more information.