i could not find the header anywhere in the filesystem except in the following linux source directory ,.: /usr/src/kernels/2.6.23.1-42.fc8-i686/include/linux
but linking this file providing for gcc to look here does no good, .. i am still getting a lot of errors , ... i tried removing and reinstalling the headers and even the kernel-devel packages, but no use, module.h is still missing , ...... any other go ???
