I believe Rilou Aura Sphere Now has already told you he can't make the code in till the American release of Pokémon Black and White, so please stop begging for it.
I found a code on the net for an Event Shaymin!(Press L+R to Activate, replaces first Pokémon in party) For those of you who want it here it is
Pokémon Black
Pokémon White
Please note: I tested this on my Pokémon White (Retail Cart).
@Staraptor204 Depending if your playing it on emulator or you're playing it on a retail cart. I know with DeSmuME you can save in the middle of a battle.
Hope I helped
Have you tried the cheat no forced trainer battles? If not here is the code for Pokémon Black:
That might work for it Or im not sure if you can do a walkthrough walls cheat and get to the staircase through another way.. if you haven't tried it here's the code: [Press L+A to enable and L+B to disable]
Hope I helped a bit...
@Riolu Aura Sphere Now if you don't mind could you please make an event Shaymin code for Pokémon White (Retail cart) i have been looking everywhere for it
If you can Thank-you in advance !
@theprp29 You might want to stop asking that all the time otherwise some people are gonna get a bit angry . Someone is probably working on the code so just stop asking if that's ok... (BTW i am not meaning to be rude or anything just saying).