Simple step by step walk through. As usual I take no responsibility what so ever. Compiz Config settings manager is a manager that lets you control what compiz fusion does with the key combos.

Step 1: Open Synaptic Package Manager
Step 2: Click the Search Icon
Step 3: Type in these keywords: compiz config
Step 4: Mark Package Compiz Configuation Settings Manager.
Step 5: When the list of dependencies comes up click mark all.
Step 6: Click apply
Step 7: Click apply again.

There you have it. It is now installed and ready to use. To use this application in Ubuntu 8.04 click ALT+F2 and type in ccsm.