So if you have ever wanted to have alerts pop-up like they do in Outlook, Kevin's got a great screen cast that walks through how he did this in Excel. He also had his intro one back from Sept 25 - here's the link so you know what he's referring to.
Warning: the screencast takes some time to popup but it's a very effective way of showing how this tool works, including from other applications such as within Excel.
I just added some basic toolbar Alerts to my application and now I'm totally jealous. I have to redesign it as Kevin's implementation totally rocks!
Now the question is: where's the code?
Kevin Ragsdale : Screencast: Desktop Alert Callbacks