I guess you are talking about AT-FBUS card. Actually you don't need to install any .inf file for AT-FBUS, and you need to select your card type (AT-FBUS or PCMCIA-FBUS) during the installation. In fact, you need to check the driver in "Device Manager" with "Show hiddent devices" selected.
You can refer to the attached "Windows 2000 Installation Guide" to install the AT-FBUS properly.