You'd need to use the Joomla version (which I'm sure you are) and create a plugin (or find one someone already created) that will integrate with CB 1.2 by studying some of the existing 1.2-updated integration plugins. You can first look on Joomla Extensions and the Developer's site to see if one exists.
If you can't find one, it's not too hard. I'm not a coder at all and managed one integration myself.