I did a big mistake today, I tried to install vmware on Feisty and even though I have written an article about Installing VMWare server on Feisty I tried to install it without the Vmware patch, and what did I get?

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? [/lib/modules/2.6.20-16-generic/build/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 /lib/modules/2.6.20-16-generic/build/include/.. SUBDIRS=$PWD SRCROOT=$PWD/. modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.20-16-generic'
  CC [M]  /tmp/vmware-config0/vmmon-only/linux/driver.o
In file included from /tmp/vmware-config0/vmmon-only/linux/driver.c:80:
/tmp/vmware-config0/vmmon-only/./include/compat_kernel.h:21: error: expected declaration specifiers or ‘...’ before ‘compat_exit’
/tmp/vmware-config0/vmmon-only/./include/compat_kernel.h:21: error: expected declaration specifiers or ‘...’ before ‘exit_code’
/tmp/vmware-config0/vmmon-only/./include/compat_kernel.h:21: warning: type defaults to ‘int’ in declaration of ‘_syscall1’
make[2]: *** [/tmp/vmware-config0/vmmon-only/linux/driver.o] Error 1
make[1]: *** [_module_/tmp/vmware-config0/vmmon-only] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-2.6.20-16-generic'
make: *** [vmmon.ko] Error 2
make: Leaving directory `/tmp/vmware-config0/vmmon-only'
Unable to build the vmmon module.

For more information on how to troubleshoot module-related problems, please 
visit our Web site at "http://www.vmware.com/download/modules/modules.html" and
"http://www.vmware.com/support/reference/linux/prebuilt_modules_linux.html".

Execution aborted.

Unfortunately on those links there is no real help, so please if your are getting to this post because you have that same error, just remember to download the Patch for vmware

untar it, and the execute the

runme.pl file.

Just remember to install all the necessary software before trying to install VMware, if you need help with this.

Follow this Instructions