the PSP does NOT have an arm processor, and win has NOT been ported to it,
but a Win95 image(!) was loaded into a bochs emulator.
what was ported to PSP, is bochs but still, if you've seen that page of that guy
doing it (http://www.hacker.co.il/psp/bochs/)
he says booting more than 10mins(!!!), no keyboard support, etc, etc....

ok, well, let somebody compile bochs for the 770 and we will try the rest out.
http://bochs.sourceforge.net/

btw, maemo dict destroys the app-catalogue on my machine.
does it also on yours? (no more installation possible after installing the dict..)