david@neptune:/usr/src/linux-source-2.6.15$ make CC=gcc-4.0 SUBDIRS=/usr/src/modules/fglrx modules
Makefile:486: .config: No such file or directory

  WARNING: Symbol version dump /usr/src/linux-source-2.6.15/Module.symvers
           is missing; modules will have no dependencies and modversions.

scripts/Makefile.build:15: /usr/src/modules/fglrx/Makefile: No such file or directory
make[1]: *** No rule to make target `/usr/src/modules/fglrx/Makefile'.  Stop.
make: *** [_module_/usr/src/modules/fglrx] Error 2
david@neptune:/usr/src/linux-source-2.6.15$