installing dkms

[mikyfinn]

Hi,
I've installed bt4 final on virtual box. I'm trying to install the guest addition for it but I first need dkms.
With command "apt-get install dkms" I get this error message.

dkms: Depends: linux-headers but it is not installable

I saw a similiar post (I think) on this forum but it was in Spanish so...
Could someone point me in the right direction?
Thanks!

[lupin]

I dont have dmks installed...

root@bt:/media/dvd$ apt-cache search dkms
dkms - Dynamic Kernel Module Support Framework
root@bt:/media/dvd$ dpkg --list | grep dkms
root@bt:/media/dvd$

...and I just installed the Guest Additions like so:

(Actually an update of the Guest Additions, but same deal.)

Select "Install Guest Additions..." from the Devices menu on your BT4 VirtualBox window, then

root@bt:/media/dvd$ mount /dev/dvd3 /media/dvd
mount: block device /dev/hdc is write-protected, mounting read-only
root@bt:/media/dvd$ ./VBoxLinuxAdditions-x86.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 3.1.6 Guest Additions for Linux........
VirtualBox Guest Additions installer
Removing installed version of VirtualBox Guest Additions...
Building the VirtualBox Guest Additions kernel modules
Building the main Guest Additions module ...done.
Building the shared folder support module ...done.
Building the OpenGL support module ...done.
Doing non-kernel setup of the Guest Additions ...done.
You should restart your guest to make sure the new modules are actually used

Installing the Window System drivers
Installing X.Org Server 1.5 modules ...done.
Setting up the Window System to use the Guest Additions ...done.
You may need to restart the hal service and the Window System (or just restart
the guest system) to enable the Guest Additions.

Installing graphics libraries and desktop services components ...done.

[Kaskade]

I've searched the forum and couldn't find anything else, so...
i need to install dkms in order to install drivers for a macbook.
I've got the same problem as mikyfinn.