Introduction - If you have any usage issues, please Google them yourself
WINCE for install apps
UPDATE:
The Dumprom.exe in 'Nkbintools' package provided sets the 'machine type" for all PE-files dumped as MIPS R4000. Might be that's not what you wanted. Hence you should know that Dumprom.exe contains at offset 0x1E64 the "machine type" for the PE-files it generates.
Examples:
C0 01 => 0x1C0 => ARM
C2 01 => 0x1C2 => ARM Thumb
66 01 => 0x166 => MIPS R4000