> Does anyone know what the backgroundfetch parameter does in this connection string?
>
> "Driver={Microsoft Visual FoxPro Driver};SourceType=DBF;SourceDB=\\fileserver\;Exclusive=No;Collate=Machine;NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO"

You have probably this string taken from http://www.connectionstrings.com/?carrier=visualfoxpro, colleague.
Perhaps this will give you some insight: http://support.microsoft.com/kb/269881.

HTH.

Regards,

Ilya