VirtualBox kernel problem

Question

Dear All,
It is my first post here so please be gentle.
I'm trying to install VirtualBox on my Oracle Linux 6.3, I did use VB before on my Mac for last 2 years but I'm not on Linux.
After succesful download & install VirtualBox-4.2-4.2.6_82870_el6-1.x86_64.rpm
I get a message
#Kernel driver not installed (rc=-1908)
The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing
'/etc/init.d/vboxdrv setup'
as root. If it is available in your distribution, you should install the DKMS package first. This package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary.#
So i go and do this getting:
[root@redstation peter]# /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules [  OK  ]
Recompiling VirtualBox kernel modules [FAILED]
(Look at /var/log/vbox-install.log to find out what went wrong)
So checking the log file
Makefile:181: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again. Stop.
Could someone guide me what to do next please
Many Thanks,
Peter
Edited by: user9111342 on Jan 8, 2013 1:10 PM
My Computer is just Dell OPTIPLEX 745 with 6GB ram if that is important

Answer 1

I have tried as well installing dkms as it say in the VB manual and
[root@redstation peter]# yum install dkms
Loaded plugins: refresh-packagekit, security
ol6_UEK_latest | 1.2 kB 00:00
ol6_latest | 1.4 kB 00:00
ol6_latest/primary | 24 MB 01:45
ol6_latest 18419/18419
Setting up Install Process
No package dkms available.
Error: Nothing to do
[root@redstation peter]# VirtualBox
WARNING: The vboxdrv kernel module is not loaded. Either there is no module
available for the current kernel (2.6.39-300.17.3.el6uek.x86_64) or it failed to
load. Please recompile the kernel module and install it by
sudo /etc/init.d/vboxdrv setup
> You will not be able to start VMs until this problem is fixed.
Qt WARNING: QGtkStyle was unable to detect the current GTK+ theme.
Qt WARNING: Qt: Session management error: None of the authentication protocols specified are supported
[root@redstation peter]# sudo /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules [  OK  ]
Recompiling VirtualBox kernel modules [FAILED]
(Look at /var/log/vbox-install.log to find out what went wrong)And in the log still say
Makefile:181: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again. StopIt looks like there is no dkms for OL ????????? I don't understand what is happening or what is NOT happening