I want to create cb 1.2 and connect it with my forum phpBB3. But I want that instead of the username on right side i want First name and Surname - that i will create as custom field in cd registration. Is this possible?

Not sure I understand what you are asking...

Where is the "right side"? If this is in phpbb then you would need to MOD phpbb to show that data... Otherwise I am not sure where the "right side" is...

Greg

As we know phpBB3 has implemented avatar, name and other info on the right side.
www.phpbb.com/community/viewtopic.php?f=72&t=990005
here you have username,avatar on the right side.

But this "right side" isn't a problem.
The problem I would ask for is there possibility to change username under the avatar to Name and Surname.

To make that happen you would likely need to modify the phpbb template and/or code to allow it to grab the data from a CB/Joomla database table and field.

So it is possible... would take a bit of work and modification to phpbb... probably not likely for CB Connector.