This is just a shot in the dark, but did you install the 1.1 patch ?
There is no FF in GPL prior to the patch...
When you install the patch, a file called sample_core.ini (or something like
that) is created in the GPL root. You might want to take a look at that file
and copy & paste the relevant stuff into your own core.ini file. That worked
for me and my MS FF Wheel.
Simon
Regards
Mark
As a last resort you could always do what us techies do, read the
instructions. In the readme file that comes with the patch it explains
precisely what to do with the file.
Andi.