Can't find launcher after install GUI ubuntu-desktop

[mKlaris]

Hi,

I followed up Openflow-tutorial and installed Ubuntu-desktop with using this prompts:
$ sudo apt-get update
$ sudo apt-get install xinit ubuntu-desktop virtualbox-guest-dkms
(restart vm - I am using virtualbox)
$ startx

But only what I got, was empty background. So I found on ubuntusk.com this prompt:
rm ~/.gconf ~/.gconfd ~/.metacity ~/.compiz-1 ~/.config/compiz-1 ~/.config/dconf -rf

After that my launcher showed. But after restart VM it was hidden again.

So I would ask how I can fix this?

And is it possible set this VM for running GUI after start or restart VM? Now I start VM and see terminal and after typing credentials (mininet/mininet) I have to type startx for GUI.

I'm not exactly Linux-person but I try learning SDN technology for my diploma.

Thank you for your help!

Klaris