in the last weeks i saw a lot of users looking for information about setting up and/or configuring extval and/or codi.
the simple answer: both don't required configuration by default.
zero config allows you to add the jar files you would like to use to your project and that's it.
(in case of codi you have to ensure that you have configured the cdi implementation of your choice correctly. in case of the bv module of extval, you have to ensure that you added the bv implementation of your choice.)
information about the libs is available in the corresponding wiki which is liked on the official website of each project. please check the wiki and/or send a mail to the mailing list.