The idea of counting how much everything runs is a very rough estimate and thats if all your gear is being used. As MRT says, you need a hardware tool to do the counting unless youre Magical Trevor : )
CPU:P4 3GHz 800 FSB HT RAM: 1.5GB DDR400 VideoCard: Ati R 9800 Pro Monitor: HP TFT 19" L1925 Sound:Audigy2 ZS Platinum w/ Logitech z-680 5.1 Surround