I have a compiled program, we'll call it PROGRAM.EXE, for 32-bit Windows; I'm not entirely sure, but the original source was probably some flavor of C. It's a video game in Japanese.

I want to replace all the strings in this already-compiled program with equivalents in English. I might also need to replace the font to make it work. I've seen this done with a number of amateur-translated Japanese video games, including several games in the Touhou series.

How do I do it?