What does enemy of viruses and cyber square and y yellow mean in megaman battle network 3 white

LOL...ok GO to the SCILAB's square (science lab)....you should use Yai's teleporter...then find a yellow NAVI...talk to her, she says she dropped a LongSword E....get a chip like that and give it to her ...etc...there you go. but for some weird reason it wont work for me if it doesnt work again i wil murder that retarded yellow dude someone just tell me how to do the thing do i need to right letter on the sowrd or what