[Zope] foxpro

Does anyone know how to connect a foxpro database to the web using Linux, Zope and Postgresql? Right now, we're using dbf2pg to convert the data 5 times a day from foxpro to postgres, but this is just a stop gap solution. The data is not updated, but the tables are 50M each and running the conversion takes more than an hour. Any suggestions? Thanks in advance, Liz