This post provides a step-by-step tutorial for creating professional iconography for your Windows Mobile application. With these guidelines and Adobe Photoshop, developers’ll learn to apply the appropriate styling and sizing to their image assets for use within their applications as well as in the Windows Marketplace for Mobile. In addition to the tutorial, a Photoshop action file is provided for assisting with the creation of the required files. Developers who’re planning to distribute applications on the Windows Marketplace for Mobile are encouraged to utilize these guidelines to ensure their applications adhere to the application submission criteria.
Full Guide: Windows Blog