In addition to the CVSROOT, you'll also need to know the name of the module (collection of sources) that you'd like to check out, as well as an anonymous password that you'll need to log in to the CVS password server. Unlike anonymous ftp, there is no "standard" format for the anonymous password, so you'll need to get the specific password from the developer Web site or the developers themselves. Once you have all this info, you're ready to begin.