Actually you can use the Blackberry to dial thru the directory. Simply press and hold the "Alt" button while pressing the letters you want, the proper touch tones will be generated.

This does NOT work on any of the Windows Mobile phones that I have tried, only Blackberry (once again they are number 1 for a reason). I had a blackberry for years and then decided to upgrade to the Motorola Q, after 6 month I gave it back and restarted my old blackberry, there is no comparison.