Thanks for your response, GPIB Guru!
You are right on #1. I got to know yesterday. I have already uninstalled the NI 488.2 driver. Originally, we were trying PC104-GPIB card with WinNT 4.0. then, we were mistakenly informed that PCMCIA-GPIB works with NI-Device, which you correctly pointed out in #2.
If you find any company or individual who already has NI-Device driver for PC104-GPIB or PCMCIA-GPIB, please post it immediately.
Thanks Again.