Ok computer peeps, I got a question?

I’m going to buy a new Video card for my computer and I’ve found one. The system requirements ask for a PCI Express-compliant motherboard,a 425W power supply, and for "Additional System Requierments" it says I need Two 4-pin supplementary power connectors or one 6-pin PCI Express supplementary power connectors. How do I know If my [...] http://bit.ly/k18Sht