linux-image for kernel 2.6.24-20 not found

[akhalfan]

Binary package hint: virtualbox-ose

i'm trying to use virtualbox yet i'm getting this message everytime i'm trying to load an image

VirtualBox kernel driver not installed. The vboxdrv kernel module was either not loaded or /dev/vboxdrv was not created for some reason. Please install the virtualbox-ose-modules package for your kernel, e.g. virtualbox-ose-modules-generic..
VBox status code: -1908 (VERR_VM_DRIVER_NOT_INSTALLED).

Result Code:
0x80004005
Component:
Console
Interface:
IConsole {1dea5c4b-0753-4193-b909-22330f64ec45}

so i try to install virtualbox-ose-modules but the problem is that I need to install the linux-header and this is the msg that i get:

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  linux-image: Depends: linux-image-generic (= 2.6.24.19.21) but 2.6.24.20.22 is to be installed

I'm running 2.6.24.20 but i only see up to 19 in synaptic

[guidol (monk-e)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 255150, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.