This is Perl module DBIx::RewriteDSN. INSTALLATION DBIx::RewriteDSN installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan DBIx::RewriteDSN Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION DBIx::RewriteDSN documentation is available as in POD. So you can do: % perldoc DBIx::RewriteDSN to read the documentation online with your favorite pager. cho45