Microsoft Pocket PC 2003 SDK
http://download.microsoft.com/download/6/9/5/69570242-44e8-45e6-a252-9bd56db8ec83/Microsoft%20Pocket%20PC%202003%20SDK.msi
Windows Mobile 2003 Second Edition Emulator Images for Pocket PC - CHS
http://download.microsoft.com/download/e/2/8/e28792ca-d04b-407b-9b18-75b9128f0cc9/Windows%20Mobile%202003%20Second%20Edition%20Emulator%20Images%20for%20Pocket%20PC%20-%20CHS.msi