Be sure to install the proper version of FRX. Consult this compatibility guide
for information on which versions of FRX are compatible with your version of Sage MAS 90 or 200.
Almost all versions of FRX also have a service pack that needs to be applied prior to installation. The service packs may be downloaded from here
The installation of FRX is a self install which is started automatically when you insert the FRX disk into the CD.
In most instances you should install the program locally and access the data from a common network location. The data which is accessed from the network is the SYSDATA folder which contains all of the financial statement formats shared by FRX users.
For the location of the SYSDATA folder, review another installation of FRX to see where their data folder is pointed (under the administration menu choice).