My own solution.
Well - I have to admit that after getting a good nights sleep I solved
the problem
PostgreSQL 6.5.1 doesnt use DBD / DBI
There is the Pg package for perl. Changing my old perl scripts to use
the Pg package insteed of dbd/dbi made them all run again without
installing any DBD and DBI.
Best regards
Jesper K. Pedersen
PS. Its amazing what a nights sleep can do when you get stuck with a
problem...