turn tables hooked up to PB?

is there a way that i can hook my turntables up to my powerbook g4? (DVI i think)

im thinkin about getting a keyboard and reason or cubase or logic or something liek that for christmas and begining to work with that, so no setup is totally unreasonable to get this going

-chris

This is the only thing I can find:

http://www.bytewizecomputers.com/products/7/3/279/6735

If you're going through a crossfader then something like this:

http://www.griffintechnology.com/products/powerwave/