Please help with Sbox and Gameshark

[Darthus]

Right, I did that. I was just making sure that it wasn't supposed to close itself. But, when am I supposed to press r1+O, or does it matter? You know, you press reset, the tray slides back in, it makes a few loading noises, and then stops. The only way I've gotten it to work is to hit it JUST as the tray is closing, before it starts making loading noises. But that still doesn't work most of the time.