1st,go to lv 7-1.Climb the ladder at start,bla,bla.Go all the way to the right.U will find a pot and alot of shy-guys coming out from the pot.u will see 2 block or wateva.Put 1 in the left corner of the place the pot is.When the shy-guy comes out don't kill it,take him and wait till all the other shy-guys come out.The shy-guys will be all trapped in a little space.Then,when they're done coming out,throw the shy-guy u were holding 2 the place the other shy-guys were trapped.All the shy-guys are gonna die and give u a 1 up.If done correctly u should get from 1 to 3 1ups.Keep doing it till u get 99 lives.Hope this hint helps u.=D