(having all zope directories in you PYTHONPATH, open a PYTHON prompt)

>>> from ZODB.FileStorage import FileStorage
>>> from PGStorage.pgstorage import PGStorage
>>> src = FileStorage('/path/to/your/Data.fs', read_only=1)
>>> pg = PGStorage(name='PGStorage', params='host=localhost port=5432 dbname=DBNAME user=DBUSER password=DBPASS')
>>> pg.copyTransactionsFrom(src)
>>> src.close()
>>> pg.close()k