Over the years that I have been using a Pocket PC, I have found some apps that I really can't live without. One of those apps is called Pocket Plus from Spb Software. It is a great today screen plug in that includes a program launcher, battery indicator, system shortcuts but the one thing I like is it that it takes the close (x) button and actually closes the program unlike the standard windows CE function.
There are alot of features that this program offers and I suggest you check it out. I think you'll agree that it's one app that you wondered why you didn't get it earlier. Pocket Plus
Enjoy.