FABS - Qbasic

[G43]

Has anyone ever heard of FABS Plus Net from Computer Control Systems.  We use a program at my workplace that was written specially for a handful of automotive stores in the 80's and it calls FABSMB regularly.  I have been researching and found a reference to FABS here http://www.gcssoft.de/ I am trying to debug a couple of things in the program and i need to find a copy of this FABS if it is possible to look at the index files that are in use.  Any help would be appreciated.

Thanks,

Garrett