Well 1st You PLAY the Game In Stead Of Cheating Your Mother Would be Ashamed to have a no good dirty rotten cheating stealing daughter/son
You cant enter cheats on Pokemon Diamond, the only is on a game shard or by mystery event maybe.
type them in
There are already cheats!
you don't
You don't xD
you can't
Imposible.............. Possible with cheats but, you can get it in pokemon black and white 2
There's no cheats to evolve Pokemon that requires trading.
There are no cheats for gameboy, althoughthere are for visualboy.
on action replay or m3dsreal
you need an action replay
Yes action replay can give you cheats