I had constant problems wiith the installation when trying to use the kernel sources.
I have a FX5200 but I finally did it: I installed the headers from the package kernel-headers-2.4.18-bf2.4 (exactly the same kernel that is provided with the bf24 flavour installation). Once the headers were installed I run the installer using the option:
and it worked fine.
I am not an expert but I hope it will also work for you.