zed 12fx with PT9

[sdskipper]

I have a Toshiba Satellite laptop 2 gb ram 160hdd win 7 and protools 9. Runs fine with mbox mini. have downloaded asio4all so that i can use a Allen and Heath zed 12fx usb mixer. I can get music out of the computer, but can't get pt9 to recognize anything coming into the computer so that I can record. I do Voice over work so all i am trying to record is 1, 2, and occasionally 3 mics. Any suggestions.