Here is Some Working Keys For Avira Premium AV and Security Suite. (I only Tested it For Avira Premium Security Suite). Key Valid Till August 2011.
----------------------- Instructions-------------
1. Extract the Archive.
2.Start AntiVir by double-clicking on the umbrella icon in the taskbar.
3. Click on "Help → License management”.
4. This opens the license wizard. In the last sentence click on hbedv.key.
5. Navigate to the folder with your saved license file using the explorer that now opened up. Select the file by double-clicking on it.
6. Select "Yes".
7. Done.
