HowTo: VMware Server 2 on ReadyNAS 4.2.11

I tried installing this onto my ReadyNas Pro running 4.2.15. The only step I changed was grabbing the 4.2.15 GPL. When I ran vmware-install.pl I get the following after I accept the license. Does anyone have any advise for this error? I am a newbie.

None of the pre-built vmmon modules for VMware Server is suitable for your
running kernel. Do you want this program to try to build the vmmon module for
your system (you need to have a C compiler installed on your system)? [yes]

Using compiler "/usr/bin/gcc". Use environment variable CC to override.

What is the location of the directory of C header files that match your running
kernel? [/usr/src/linux/include]

Extracting the sources of the vmmon module.

Building the vmmon module.

Using 2.6.x kernel build system.
make: Entering directory `/tmp/vmware-config0/vmmon-only'
make -C /usr/src/linux/include/.. SUBDIRS=$PWD SRCROOT=$PWD/. modules
make[1]: Entering directory `/c/vmware/GPL/linux-2.6.33.7'

WARNING: Symbol version dump /c/vmware/GPL/linux-2.6.33.7/Module.symvers
is missing; modules will have no dependencies and modversions.

CC [M] /tmp/vmware-config0/vmmon-only/linux/driver.o
CC [M] /tmp/vmware-config0/vmmon-only/linux/driverLog.o
CC [M] /tmp/vmware-config0/vmmon-only/linux/hostif.o
CC [M] /tmp/vmware-config0/vmmon-only/common/comport.o
CC [M] /tmp/vmware-config0/vmmon-only/common/cpuid.o
CC [M] /tmp/vmware-config0/vmmon-only/common/hashFunc.o
CC [M] /tmp/vmware-config0/vmmon-only/common/memtrack.o
CC [M] /tmp/vmware-config0/vmmon-only/common/phystrack.o
CC [M] /tmp/vmware-config0/vmmon-only/common/task.o
CC [M] /tmp/vmware-config0/vmmon-only/common/vmx86.o
CC [M] /tmp/vmware-config0/vmmon-only/vmcore/moduleloop.o
LD [M] /tmp/vmware-config0/vmmon-only/vmmon.o
Building modules, stage 2.
MODPOST 1 modules
CC /tmp/vmware-config0/vmmon-only/vmmon.mod.o
LD [M] /tmp/vmware-config0/vmmon-only/vmmon.ko
make[1]: Leaving directory `/c/vmware/GPL/linux-2.6.33.7'
cp -f vmmon.ko ./../vmmon.o
make: Leaving directory `/tmp/vmware-config0/vmmon-only'
Unable to make a vmmon module that can be loaded in the running kernel:
insmod: error inserting '/tmp/vmware-config0/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.

For more information on how to troubleshoot module-related problems, please
visit our Web site at "http://www.vmware.com/go/unsup-linux-products" and
"http://www.vmware.com/go/unsup-linux-tools".

Execution aborted.

NASHOG:/c/vmware/vmware-server-distrib#