u need a DS that has a gameboy slot in it first
insert a megaman battle network game in the game boy slot(it doesnt matter which one)
and in your starforce 1 game pulse into the dog house in echo ridge u should see a EM wave ball thingy and theres a little cutscene and then u need to find a jammer(i cant remember where it is)and when u defeat it u go back to the dog house and another cutscene will come and Megaman gives Megaman the BN buster.
hope i helped
Megaman Starforce 3
megaman starforce 1 2 and 3
No sadly since starforce 1 and 2 cannot connect, neither can starforce 3. Since there are different types of powers in each game they cannot connect to eachother.
there is talk of a new megaman for 3ds
gamestop
you buy it from a shop
June 30
you can't
There are a bundle of cheat codes available to the Megaman Starforce 3 series that can be found online. The cheats are available on GameFaqs database.
it was a download event
you need joker key
I t comes out July 30 2009