... without actually emulating a PC? Like, you'd install everything from the setup.exe to a folder in the homebrew, like when you'd install it to C: on a PC. Keyboard commands could even be mapped to the PSP buttons in a config.txt or whatever.
Is this even possible, though? Or would it be basically a Windows emulator? Is a proper Windows emulator even possible, one that could run games? Good Lord this can get confusing.