Benetl is a free ETL tool for files
Benetl is a free ETL tool working with postgreSQL 8.3
Version of Benetl, the free ETL tool, in download is version 1.8 (04/30/2008)
Better GUI and support of xls file format, you should update.
Please read about "part formula" in documentation, in order to see possibilites that Benetl brings.
Benetl is a freeware you can freely download, use and redistribute.