MIDI Control With CDJ 350

Hi,
Im trying to set up my Pioneer cdj/djm 350 through MIDI control and having problems. Once i connect the decks to the computer using a usb cable it seems that both decks only control deck A on the computer. How can i control both Deck A and B? Also a soundcard isnt neccessary for this is it? sorry if these questions are stupid im new to this!
Regarsd, Connor
Im trying to set up my Pioneer cdj/djm 350 through MIDI control and having problems. Once i connect the decks to the computer using a usb cable it seems that both decks only control deck A on the computer. How can i control both Deck A and B? Also a soundcard isnt neccessary for this is it? sorry if these questions are stupid im new to this!
Regarsd, Connor