PostgreSQL OLEDB驱动：PGNP
http://www.pgoledb.com/index.php?option=com_filecabinet&view=files&id=1&Itemid=68
驱动汇聚：
http://www.giveawayoftheday.com/postgresql+oledb+provider/
其他：
PostgreSQL OLE DB Provider
Type: OLE DB Provider
Usage: Provider=PostgreSQL OLE DB Provider
Usage: Provider=PostgreSQL OLE DB Provider
Manufacturer: PgOleDb Development Team
Standard
PgOleDb requires a PQLib of version 7.4 or up and it also requires a backend of version 7.4 or up. Timestamps are only guarenteed to work with backends of version 8.0 and up.
Provider=PostgreSQL OLE DB Provider;Data Source=myServerAddress;location=myDataBase;User ID=myUsername;password=myPassword;timeout=1000;
Other valid Provider values is "PostgreSQL" and "PostgreSQL.1"
Standard alternative
Some reported problems with the above one. Try removing the timeout parameter to make it work.
Provider=PostgreSQL OLE DB Provider;Data Source=myServerAddress;location=myDataBase;User ID=myUsername;password=myPassword;