punbb.inc.php goes into coppermine's bridge directory.

alter the lines at the top of the file to suit your circumstances, 
most info is automatically read from punbb's own config file.

drop the redir.php file into the punbb root dir, changing the $cpg_url as applicable
This will allow punbb to redirect users back to the gallery after login. 
Redirection after logout is not possible, as there is no capacity for this within punbb's code.

Add or edit the line into init.inc.php, 

define('UDB_INTEGRATION', 'punbb');

ensuring it is not commented out.

All other functionality is common to all bridges, check the coppermine dpcumeatationn for general bridge instructions.

