I called VZW and asked this question before buying the phone. The tech didn't have a clue what Bluetooth DUN was and had to ask his supervisor. The supervisor said it wasn't supported, and refered me to cellphonehacks.com.
I thought that was funny/interesting.
I couldn't find a way to enable DUN on the 7130. And, according to this post on the EVDO forums, even if you had DUN, the speed would be limited to 143K, which is far below EVDO's potential: http://www.evdoforums.com/about1307.html