1. The activation request you encountered is for NI-FBUS Configurator. I am sorry that there is no free full-function trial version of NI-FBUS Configurator. You can use the evaluation version of Configurator which supports offline configuration.
2. There is no need to install any other cards. The NI-FBUS software you downloaded includes the driver for NI-FBUS PCMCIA-FBUS card.
The software package you downloaded from NI web contains NI-FBUS Communications Manager(CM) and NI-FBUS Configurator.
Communications Manager(CM) is free. It provides the drivers for NI-FBUS interface cards (such as PCMCIA-FBUS) and interfaces for accessing FF network.
Configurator is a graphical tool for FF network configuration. It needs extra purchasing and activation. An free evaluation version of Configurator is available without activation. You can use it to configure devices and FBAPs in offline mode.
Please refer to NI-FBUS Configurator User Manual Page 3-8 for a tutorial of creating an offline project. (Start->National Instruments->NI-FBUS->Manuals)
Feilian (Vince) Shen