The HTC Cavalier S630 is the supposed successor to the <a href="http://reviews.cnet.com/smart-phones/t-mobile-dash-aka/4505-6452_7-32088045.html">T-Mobile Dash</a>, and though it's yet to be officially announced by HTC or a U.S. carrier, we scored an unlocked version of the Windows Mobile smart phone. Here is our hands-on look at the Cavalier.