you need the action replay to complete the entire pokedex
buy an action replay. it has tons of cheats. i think one is for a complete national dex :).
You can't get the dex by doing nothing you have to beat the elite four with over 60 Pokemon species in your dex.
NO, that is impossible. You need to trade and migrate Pokemon to complete the national dex.
You complete the shinho dex first and then you get the national pokedex
cheats like action replay sometimes r4 has cheats
In any Pokemon game(ex.Red,B,Y) complete the (reigon) Dex and collect the National Dex, enabling Pokemon from other reigons catchable.
complete the pokedex then go to professor rowan and he will give you the national dex
What you have to do is catch all the Pokemon from all the other regions(complete national dex.
complete the johto dex then prof oak will give it to you.
You get a life lol
=you first have to complete the sinnoh dex,this is not that hard.==however the national dex is,YOU HAVE TO CATCH EVERY POKEMON THERE IS!!!!!!!!!!!!!!== you HAVE to trade and migrate,==hope it helped!==^_^=
You can have the national dex, but you can't complete it without transferring Pokemon from GBA games. Therefore, it's impossible to complete the national dex using only a DSi (without cheating with an Action Replay.)