If there's a DLL along with the .fp, then you can convert it to a LabVIEW driver by going to Tools>Instrumentation>Import CVI Instrument Driver. If there's no DLL, give use the name of the driver and maybe someone here with LabWindows/CVI can create the DLL. You should also post the same request to the LabWindows forum. Also, if there's no DLL, it probably means that the driver is really old and might take quite a bit of work to become functional.