Using a controller, same as the one you use on your 360. The crappy D Pad on the 360 controller makes it less than desirable, but its comfy to hold.
Yoiu can buy PC specific USB pads, or use a Dual Shock 3, or whatever. All works the same as long as it has enough buttons.
____________________________Reiginsei, San'doria Rank 8 Hume Male. 75RDM
/69BLM59PLD [5/5 Duellist 01/17/08][4/5 Koga][0/5 Valor][CoP+RotZ]