Shoot The Duckies

I just bought an M-Audio O2, and I can play fine, but I can't actually lay down a piano roll with it in fruityloops..can someone tell me why this is? What'm I missing? -.o

Hello all, I'm a newly registered user (though I've been lurking for awhile) and must say that I'm very impressed. I only wish the FL threads were still active; could do with some tutorials! Cheers, and seeya around.