virtualbox guest addon don't working

[Balint Szigeti <balint.szgt@gmail.com>]

hello

I installed virtualbox-guest-additions, virtualbox-ose, 
virtualbox-ose-dkms, virtualbox-ose-qt packages.
lsmod says:
.......
vboxdrv              1723671  2 vboxnetadp,vboxnetflt

I can't run "mount -t vboxfs <Share> <Target>" command because mount 
can't find vboxfs. I tried this:
modprobe vboxfs and modprobe vboxvfs but there isn't as module.
I searched this modul in /lib/modules/`uname -r`/modules.* files but it 
was unsuccessfully.

Do you know how can I fix this problem?

Remark:
I didn't install any X server.

Thank you
Balint