I got a Dualshock PS2 controller this week and plugged it into my PC via the play.com usb convertor. It's been working great until tonight when I tried to play Fifa 2004 demo. As soon as I start the game, the controller starts vibrating and won't stop. Please, has anyone got any suggestions? I just got rid of my Logitech pc game pad thinking my ps2 pad was going to be much better.