Thirding the Subversion/SVN suggestions. It's generally a newer, better CVS with some new features and a lot less of the negative features/lack thereof, of the older system.
If any of your team has CVS experience they should have no real problem with the switch, and anyone without prior version control experience will just be that much better off starting with Subversion. -- http://mail.python.org/mailman/listinfo/python-list
