Jesse Liberty has started a series of tutorials for iPhone developers that focus on the minimum you need to know to add Windows Phone 7 development to your skill set. The series begins with iPhone to Windows Phone 7 Tutorial – #0. In the first tutorial, Jesse addresses: Phone performance, Games on Silverlight, MVC & MVVM, Objective C & C#, and Coding for two platforms.
For all practical purposes, your choices come down to using a PC or a Mac with Bootcamp and…3 GB of disk space, 2GB of RAM, and A DirectX 10 capable graphics card with the WDDM 1.1 driver.
More Info: iPhone to Windows Phone 7 Tutorial – #0