PC versionGBAWIP Fans have made a PC version. Some are still early, so read the project page first.
Fans took Mega Man Battle Network 3 apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here is the project we know about:
Mega Man Battle Network 3 White recompiled for GBA using gbarecomp (ROM-free bring-up)