I'm not him but, thanks!Herr Shyguy said:1) Get a GBA emulator. I use Visualboy Advance.
2) Get a Pokemon FireRed ROM. This is the illegal part.
3) Download the IPS patch that I'm pretty sure is linked to in the opening post.
4) Download Lunar IPS to apply the MarioMon patch.
5) Use Lunar to apply the patch.