Pocket PC 2003 Downloads 
http://msdn.microsoft.com/library/default.asp?url=/downloads/list/pocket2003.asp 

Software Development Kit for Windows Mobile 2003-based Pocket PCs 
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=9996B314-0364-4623-9EDE-0B5FBB133652 

SDK for Windows Mobile 2003-based Pocket PC Emulator Images - 簡體中文 
http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=57265402-47A8-4CE4-9AA7-5FE85B95DE72 

eMbedded Visual C++ 4.0 
http://www.microsoft.com/downloads/details.aspx?familyid=1dacdb3d-50d1-41b2-a107-fa75ae960856&languageid=f49e8428-7071-4979-8a67-3cffcb0c2524&displaylang=en 

eMbedded Visual C++ 4.0 SP2 
http://www.microsoft.com/downloads/details.aspx?FamilyID=ce7f1aaa-54eb-4989-812b-7f955605dcb8&DisplayLang=en