1. Download the Smartphone 2003 SDK:
http://www.microsoft.com/downloads/d...displaylang=en
2. After installing it you should go to the folder:
C:\Program Files\Windows CE Tools\wce420\SMARTPHONE 2003\Tools
3. Make a copy of CabwizSP.exe and rename the new copy to Cabwiz.exe
4. Change the Cabwiz path in SetupBuilder to this one.
SetupBuilder will soon be updated to support both Cabwiz and CabwizSP.