Up, b, and Select all at the same time. :)
by relessing it
When you open a new game it will tell you what to do be aware lots of buttons
POKEMON SOULSILVER come with a poke walker and the Soulsilver game
You can delete it by clicking it and pressing delete duhhh -miraih snipes
go to release
You cannot battle between a Pokemon Black game and a Pokemon Soulsilver game.
you can't i tried trust me. if you did delete your saved file and you had a Pokemon in the walker it will be there until the battery dies get a new one.
on the main menu press new game it gives a warning that you can't save and it gives you a code to delete you game 8-)
Start a new game.
there is a game corner on Pokemon soulsilver in goldenrod city right above the Pokemon centre
Pokemon soulsilver and Pokemon heartgold are basically the same game just different versions but i do recommend buying Pokemon soulsilver
you cant delete your Pokemon from your party directly but you can deposit them into the PC at the Pokemon center or you can release them if you wish to get rid of them the option is in your PC i do believe.