Once a Pokémon is forcefully retrieved from the system, the Pokéwalker which holds the Pokémon's details is unusable. A Pokéwalker's settings must be deleted and reset before making it usable again. The settings on the game can be reset and deleted by pressing and holding Down, X, and L at the Pokéwalker connection screen. This must be done to avoid a cloning glitch. After resetting a Pokéwalker, it may be synced with another game, or a new file.
It should also be noted that when synced with a new game, the Pokéwalker will become the language the game is. For example, if a Pokéwalker that came with a Japanese game is synced with an English game, after syncing, the Pokéwalker would be in English. This proves that very little data is stored on the Pokéwalker itself; most likely only the Pokémon on it and the player's party is stored on it.
The pokemon pedometer can work with the HG or SS game when it is reset. You can't get the pokemon that might be on this one to sync with your. It has to be reset, then synced.
Thought this might be helpful to your winner if they don't know how to connect their pokewalker to the game ( I didn't and it took me forever). lol. You have to press Down + X + L and then connect with your Pokewalker. Hope this helps someone and great auction!!