When I try to view my drupal 4.7.0 site for the first time I see this :

http://www.blastwave.org/dclarke/PostgreSQL.gif

Haven't done much with PHP5 and PDO - but PDO is the new way of providing a unified database layer in PHP. Previously, all database functions were non portable (mysql_connect, pgsql_query, oracle_foo etc.) So I guess Drupal is looking for the "old style" extensions, and hasn't been made PDO aware?

Do I have to go back to PHP4 ?

Or should I go looking for a PostgreSQL PDO module for PHP5 ?

Dennis