Yes.
No you can not.
You use the action replay
well, you can't really clone them without a AR
You can't without an action replay
you need an action replay and a code
You might only if you have action replay or gameshark.
You can!get an action replay and go to You Tube For The cheat (Answer By Dragonite999)
using action replay codes also hatching from eggs.
No not with out an Action Replay code that I made.
If You Don't Have Action Replay It Is Impossible.
you can't clone Pokemon without an action replay or other cheat system
If you search Google "AR Pokemon Diamond clone code" and add it to your action replay but iff you havent got a Action Replay Device then you cant clone.if you want a AR then search Amazon.com -Chazz