Sounds like a good idea, I'd prefer SVN to CVS its basically CVS but better, with apache built in so you can browse the repository on-line and also it figures out file types where as in CVS you have to specify if its binary (image etc) or text (php css html etc etc) which could end up in dodgy data if people dont know what they are doing. Commits are atomic meaning a commit only succeeds if the entire commit succeeds so you won't have to manually figure out what still needs to be committed if a commit fails part way through etc etc.
There are more benefits but they escape me at present.

subversion.tigris.org

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mysql> SELECT * FROM `users` WHERE `users`.`clue` > 0;
Empty set (0.00 sec)