Want to develop for Windows Mobile? Get yourself a free app dev toolkit here (including a 60-day Visual Studio Professional DVD). Here’s the details:
For those new to mobile development, this toolkit includes guidance on getting started with Visual Studio .NET 2003 and the .NET Compact Framework, technical documentation and information to help take your Windows Mobile application to market. For current Windows Mobile developers, the toolkit contains the SDKs, emulator images and technical content for developing managed and native applications for Windows Mobile 2002, Windows Mobile 2003 and Windows Mobile 2003 Second Edition.
Enjoy!