I have got this info from a spanish site http://chgonzalez.blogspot.com/2006/11/instalar-vmware-server-en-fedora-core-6.html So the thanks to Christian González G.

You need to be root at first.

Then run this yum update

Then

yum install kernel-devel xinetd gcc

now go to ntsysv and make sure that xinetd will start each time you start the server, and start it now.

/etc/init.d/xinetd start

Now get the VMware from here

wget [url from the site]

Register yourself and get the serial (It is free)

tar xvfz VMware-server-*.tar.gz

Now you need to do this.

touch /usr/src/kernels/2.6.18-1.2849.fc6-i686/include/linux/linux.h

It could be needed also to perform this operation.

cp /usr/src/kernels/2.6.18-1.2849.fc6-i686/include/config/i2o/config.h /usr/src/kernels/2.6.18-1.2849.fc6-i686/include/linux/

Be sure to replace 2.6.8.18-1.2849.fc6-i686 with your kernel version. Now go to the vmware direcotory and execute the install script.

cd vmware-server-distrib

Finally

./vmware-install.pl

Should be enough.