I compared the top of my Pokemon Diamond and Pokemon HeartGold carts, and they look exactly the same, I thought Heart Gold has an infared port on the top of the cartridge to use with the pokewalker? --- "A train station is where a train stops. A bus station is where a bus stops. On my desk I have a workstation..." - Comrad Otter
It's there. On the top of the cartridge, if you look really closely, you'll see two small, shiny rectangles right above the seem where the top piece of plastic meets the bottom piece. --- "bye the way i'm 14 years old so I'm not a litle kid like you want to belief" - bowser32 Pokemon HeartGold FC: 2150-0335-6522
Yeah, it's there, right along the seam on the top edge. It's tiny, which is why the range on the thing is so minuscule. But that's good because it makes the battery last longer. --- Always interested in any Pokemon event distribution cartridges. My email is in my profile.