I think it’s available in both Home and Professional version but, like any other module, in Pro version it is even more configurable… specially on virus cleanning (automatic actions).

Do this:

  1. Control Panel > Video properties
  2. Screen Saver tab
  3. Choose avast screen saver
  4. Click ‘Configure’
  5. Inside of its configurations, choose your ‘own’ screen saver and other details.
  6. I could say more but I know it will be only in professional version… :-[