Growl for Windows can notify you whenever anything happens and it is extensible through its own app system. The application can be run as a Windows Service using FireDaemon Pro, which allows you to have the application start automatically at boot prior to login, start multiple instances of the application and more. This HOWTO will show you how to set it up. You can also use Fusion to manage FireDaemon and other Windows services via a web browser.
Growl for Windows Setup Under FireDaemon Pro
Install the Growl application. By default, the program installs to C:\Program Files (x86)\Growl for Windows
Run the application at least once to change any settings.
Download and install FireDaemon Pro into the directory of your choice, typically C:\Program Files\FireDaemon.
Next start the FireDaemon GUI from the desktop shortcut. Click on the "Create a new service definition" button in the toolbar (or type Ctrl+N) and enter the information into the fields as you see below. Adjust the paths to suit your installation. Note that no parameters are required.
Now click on the Settings tab. If you DON'T want to see Growl running, uncheck the Interact with Desktop check box & select "Hidden" from the "Show Window" dropdown. You must run Growl as the user you installed it as. In the Logon Account field type your username (e.g. Administrator) and then enter the user's password twice in the Password and Confirm fields. You can change the Process Priority to allocate more CPU time to Growl or specify which CPU or core Growl will run on (in the case of multi-processor, hyperthreaded or multi-core CPUs).
Now click on the Lifecycle tab. Uncheck Graceful Shutdown as it can slow the shutdown of Growl.
Now click on the Install button to install and start Growl!