If you are based in the US you could win a Windows Mobile Smartphone—or the grand prize, a Microsoft RoundTable conference phone. Just sign up for a Unified Communications on-demand webcast or virtual laboratory.
One winner will be selected each week through January 28, 2008. Each will receive his or her choice of a Samsung Blackjack, T-Mobile Dash, or Motorola Q Smartphone.
Everyone eligible for the weekly drawing also will be entered in the February 1, 2008, drawing for the grand prize—a Microsoft RoundTable conference phone with a 360-degree camera that can capture a panoramic view of meeting participants, track the speaker, and record meetings.
You can get more details HERE