/lib/modules/2.6.38.4/kernel/drivers/gpu/drm: no such file or directory

I am trying to build a kernel ( *2.6.38.4) *on fedora 12 in a virtual machine according to the data found at :http://kernelnewbies.org/KernelBuild i have successfully completed until: "Make all" but when i tried to run: su -c "make modules_install install" i got an error : "find :/lib/modules/2.6.38.4/kernel/drivers/gpu/drm: no such file or directory May i know how can i overcome this?