I have built a program on a Windows 2000, with a GPIB-USB-A. But when I intalled it to a Windows 95 machine, with a GPIB-PCII, the program quits. I have narrowed it down to the GPIB (VISA) part of my application. I know the GPIB card is functioning because there is an older version of the same program in the machine that still functions. Does anyone have any suggestions?