I wanted to have smooth integration: copy/paste, auto resize of the guest, etc.
Things you need to keep in mind.
1. Run VirtualBox->Devices->Install Guest Additions
2. In Suse go to /media/VBOXADDITIONS
and run the script you need. This does not means the vbox additions are up an running
Check this with
/etc/init.d/vboxadd status
3. As the upper command will tell you that that service is not running, you need to run
/etc/init.d/vboxadd setup
4. As that command will also not work it's time to add from Yast:
- all modules in "Development" package related to kernel
- and also all related to 'make' (yes C++ tool) tool.
5. Now run again
6. Now restart machine. It should work.