Here is how to enable Compiz Fusion once Ubuntu 8.04.1/8.10 is installed and added any available updates via the Update Manager.
First you need to install the Graphics driver using the Hardware Manager to enable 3D acceleration system>administration>hardware manager, restart once driver is installed *
Once you have restarted Open a Terminal and submit the following commands :
sudo apt-get install compizconfig-settings-manager
sudo apt-get install emerald
Go to Advanced Desktop Settings in preferences.
1. Click on general options at the top select the Desktop size tab, you will see that the Horizontal Virtual Size is 2 increase that to 4 (Ubuntu 8.10 the setting may be 4 already).
2. Go back to the Desktop Settings manager interface and select Desktop Cube and enable it.
3. Enable Rotate Cube.
4. Enable Expo.
5. Enable Viewport Switcher.
6. Enable Cube Reflection.
7. Enable Animations.
There are loads of tools and plugins which I have not mentioned above in the Desktop Settings Manager so you can customize your Desktop no end.
Also you will find the Emerald Theme Manager which is a must with Compiz Fusion as it enhances the experience immensely.
To find out more about Compiz Fusion http://wiki.compiz-fusion.org/
Get back to me if you have problems *
LUg.