Verizon is the king of cripple... it's unlikely they'd allow teathering on WP7 until they eliminate their "unlimited" data plans on 3G or create "software" to bill you more for that feature.

You can always go to at&t and focus

http://www.mobiletechworld.com/2010/11/11/enable-usb-tethering-on-the-samsung-omnia-7-and-samsung-fo...