D600 Docking Station NIC Driver Problem with IPX

I am trying to use IPX to run a program (PEP Unisys Emulation) and cannot get it to run when using my docking station.  The program runs fine when I run it without the docking station.  I would like to try upgrading the NIC driver on my docking station but I do not know what the NIC driver on the station is or where to find the latest NIC driver for the docking station.  Can anyone help?