Reply to DJ IO and a 64 bit computer

Can you use the Numark DJIO with a 64 bit computer??? I gave my little cousin my Total Control and DJIO, but he says he gets an error message saying it cannot be used on a 64 bit system, and thus doesnt allow him to preview anything? Is this correct, or is he missing something. I used it on my mac with no problems. What do you recommend?

Thanks in advance, J