mod chip and crossover cable Q

[thisdarklife29]

hi can you put a 120g HD in with the X-ecuter2.1 Lite Modchip or do u have to have the X-ecuter2 Pro Mod ? also on the way to hook up the computer and the X-box with the crossover cable do you need a ethernet card or some other kinda of networking card to do so? sorry i have never did anything like this before... thanks for your time