sorry as again should have been more clear. In my original post I said:
"This question has actually been answered but I am still a tad confused. My graphics card has a single power plug port thing on it. They gave me a Y cable with the single end attaching to the Card. The double end has 2 plugs that connect to the Power supply cables now do I need both these plugged into the PSU cables or just leave one free? I just dont wanna leave one free in case it damages the card through insufficient power or something"
That's what i meant by my Graphix card power problem.