Hi Foks. I.m trying to install VMware to run windoz and my windows games. When comiling I get this message:- Building the vmmon module. Using 2.6.x kernel build system. make: Entering directory `/tmp/vmware-config4/vmmon-only' make -C /usr/src/kernels/2.6.18-1.2869.fc6-i686/include/.. SUBDIRS=$PWD SRCROOT=$PWD/. modules make[1]: Entering directory `/usr/src/kernels/2.6.18-1.2869.fc6-i686' CC [M] /tmp/vmware-config4/vmmon-only/linux/driver.o CC [M] /tmp/vmware-config4/vmmon-only/linux/hostif.o CC [M] /tmp/vmware-config4/vmmon-only/common/cpuid.o CC [M] /tmp/vmware-config4/vmmon-only/common/hash.o CC [M] /tmp/vmware-config4/vmmon-only/common/memtrack.o CC [M] /tmp/vmware-config4/vmmon-only/common/phystrack.o CC [M] /tmp/vmware-config4/vmmon-only/common/task.o CC [M] /tmp/vmware-config4/vmmon-only/common/vmx86.o CC [M] /tmp/vmware-config4/vmmon-only/vmcore/moduleloop.o LD [M] /tmp/vmware-config4/vmmon-only/vmmon.o Building modules, stage 2. MODPOST CC /tmp/vmware-config4/vmmon-only/vmmon.mod.o LD [M] /tmp/vmware-config4/vmmon-only/vmmon.ko make[1]: Leaving directory `/usr/src/kernels/2.6.18-1.2869.fc6-i686' cp -f vmmon.ko ./../vmmon.o make: Leaving directory `/tmp/vmware-config4/vmmon-only' Unable to make a vmmon module that can be loaded in the running kernel: insmod: error inserting '/tmp/vmware-config4/vmmon.o': -1 Invalid module format There is probably a slight difference in the kernel configuration between the set of C header files you specified and your running kernel. You may want to rebuild a kernel based on that directory, or specify another directory. I'm new to compiling my own software and don't know how to overcome this. Any ideas? Regards John