This book combines useful, technical information about the platform, written by those who’ve been there and done it, with some stories about the people and the apps they’d written. The book will act as a handy reference that gives you a “puddy up” into developing on the platform and, importantly, helps you to avoid making the same mistakes others have made.
The answer is: use WireBear Awesemulator.
It helps Windows Phone 7 developers take screenshots and create video overlays of the WP7 Emulator. Perfect for quick marketing, demo videos, presentations, and Marketplace images.
Download link: http://awesemulator.codeplex.com/