Avant Window Navigator (Awn) is a dock-like bar which sits at the bottom of the screen. It has support for launchers, task lists, and third party applets. The dock at the bottom of the screen gives a nice apple Mac like look for your openSUSE. There are a lot of Themes Plugins and Applets that can be added onto the dock.
1. your system to support Composting (using AIGLX or XGL). In openSUSE 11.0 AIGLX composting is enabled by default.
2. X installation has Composting is enabled. To verify this