When you are on the title screen with the picture of reshiram, press the up arrow, B and Select.
no
If you erase your Pokemon file on any Pokemon game it is impossible to bring it back.
Look in the instruction book and it should give you a code to erase your data.
They disappear forever.
When you're on the title screen (top screen says Pokemon Black or White, bottom screen has the picture of the legendary), press down select B at the same time.
go to new game and do what it says then you will erase your game
start a new game
they mess up your game permenantly or until you erase your game
yes
1. if you make a new game and save, you will erase your previous game.
Of course you can!
You cannot battle between a Pokemon Black game and a Pokemon Soulsilver game.