Will this PSU do the trick?

Just bought an Antec 900 case (6 fans inside). I also bought a GeForce 8800GT. The video card states it needs a 12v rail with 26 amps. I am looking at getting the OCZ Game Extreme 600watt, it has mulitple rails (4 12v @ 18 amp). Is this ok to run? Does the additional amperage come from the the other rails?