CVS is a little confusing at first but after you get it set up it is very nice.
You have to be careful with copy/paste of those commands on the CVS info page at sf.net some things follow a space character and it is a very long line.
You have to have cvs installed on your side for it to work, type urpmi cvs if it isn't installed and it will request the correct install CD for you.
If you follow the sf.net instructions it will work.