Install the kernel-source RPM that comes with FC1 disks.
Then run 'uname -rm' this will tell you kernel version and architecture.
Then go to /usr/src/kernel-x.xxx.xxx/configs (the xxx's should match kernel version obtained in the uname command).
You should find all the configs there. Pick the correct one.
Similar (for FC2 though):
Compiling new FC2 Kernel