Is it possible to receive alerts whenever you receive a new Wave ? Yes, you can use a Windows Application called Google Wave Notifier. If you will download the Notifier, an icon will be appeared on your system and it will let you know whether you have any unread news.
Some important features of Google Wave Notifier :
•    It will automatically check for new Waves for every two minutes.
•    You can see the last reply to an unread Wave.
•    It gives you quick access to your last five unread Waves.
•    If any new version will be found, it will let you know.
•    You can easily browse to an unread Wave or your inbox.

If you are going to use the Google Wave Notifier, you should have Windows 2000, Windows XP and any other recent version Windows OS. Unfortunately, this version is currently available in English only.

From