Neowin member daty2k1 has released a Windows 7 Gmail application.
The notifier is similar to the current official Google notifier application that sits in the system tray and notifies users of new messages in their Gmail inbox.
This version of the notifier is tuned for Windows 7 only and runs as a task bar application:
When the application detects a new mail it shows the following notifications:
You can right click on the app and get Windows 7 jump lists for new emails, associated tasks and program settings:
If you change your Gmail password or you have no internet connection the application will notify you:
Download: Gmail Notifier (Windows 7)