I can map the PS3 controller, but can play

[vitalzz]

As the subject states, I am trying to play using a PS3 Sixaxis controller. I have done it in the past about a year ago but am just now getting back into emulation and for the life of me cant figure out what I am doing wrong. Dolphin lets me map all the controls without a hitch, but when I go to play a game, nothing responds. Is there some simple setting I need to turn on, what am I missing? any help would be appreciated