The Advanced Configuration Tool from TouchXperience is a free to use utility that enables you to configure virtually any aspect of your Windows Mobile device: from controlling which icons are displayed by default on the status bar at the top of the screen, to altering the GPS polling interval.

The application also allows you to edit the default key mapping behaviour on the device, so that should you wish you can make pressing the left soft-key launch the music player, for example.
File associations can be edited, enabling you to change what applications handle certain file types.

For the advanced user, once you have made all of the tweaks you wish, you can export the registry configuration as an XML file, which can then be re-imported should you need to hard reset the device.

You can add and remove icons from the Comm Manager window as well as editing the TouchFLO tabs.

The software can be downloaded from here - http://www.touchxperience.com/en/advanced-configuration-tool/downloads.html

Before installing the software, you will also need to install the Microsoft .NET Compact Framework 3.5 on your device, this is a free download from the Microsoft web site:

http://www.microsoft.com/downloads/details.aspx?familyid=e3821449-3c6b-4...

There is also an article on the Tracy and Matt web site detailing common tweaks that you can perform using the software, as well as a nifty trick on how to 'unlock' hidden features on the HTC Touch Pro 2 camera. Read the article here:

http://www.tracyandmatt.co.uk/blogs/index.php/2009/06/07/touch-pro2-adva...

NOTE - the software does come with a disclaimer warning you that you use it at your own risk and you should not make any changes to your device's configuration unless you understand the ramifications of doing so.

Happy tweaking!