You can try creating a 6.1 driver yourself. All the IVI drivers are simple wappers around a Call Library Node Function into the DLL created in LabWindows/CVI. The LabVIEW driver is created from the Tools>Instrumentation>Import CVI Instrument Driver selection. Download the CVI driver and install it. The converter will require some files installed in the \VXIpnp\WinNT (.fp) and \VXIpnpWinNT\bin (.dll) folders.