You can't catch Arceus without cheats.. You can get it when an event is going on about Arceus..
palkia,azelf,uxie,mespirit,giratina and possibly arceus (i forgot the rest)
An action replay code if you have action replay. Otherwise, it's impossible
turn on your computer on download cheat engine and get Setern wire and you the wire into to your D's and your computer and type in Pokemon's then select the cheats you want and press enter.
if it says Y in a little box under a game press Y on your ds after that their should be a list of cheats. If you have a Chinese or Japanese r4 you won't be able to read the cheats but just put them on and see what they do. As for some cheats they may have a plus sign, if it does click it and it may come up with a list of things in English. Like on my pokemo diamond it has a plus I click it and it comes up with a list of poke balls but in English. Hope i helped.
victini in pokemo black and white
u have too die
in route 5
´whell you can download a ds emulator and download a Pokemon ROM. or you can buy a r4 to ds and download a ROM to it. hope i help!
Pokemon games that came out in 07
Pokemon black
zel.pkindigo.com/map.php?map=30
you have to buy pokemo card in which you will get the code...........