Sapphire X3870 X2 Boot Up Problems Help!

[MortyFire]

Ok my system is basically a Asus P5W DH, 2 gigs GSkill Ram, Targan Modular 580w Hard drive. Intel Core 2 Duo 6600. I have 2 optical drives and 3 hard drives connected.
I installed the card and connected the 6 pin power lead (does the 8 pin connector have to be used as well?), I am getting 1 long beep and 3 short beeps when I switch on.
I have tried to limit the power output buy disconnecting what I could to see if its a power issue, could this be the problem? I have checked and checked again that the gfx card is seated in the slot properly.

 

[MortyFire]

Eeek that makes me nervous. Ok I will try this later when I get back from work. Thx for quick response.

 

[MortyFire]

Yes I have 2 power cables. Will post back later on results.

 

[MortyFire]

Ok thanks, not back home to try it yet but I have had a thought. Right with a side view of the card and the exhaust hole on the right. if i label the 8 pin connection 1 & 2 on the left through to 7 & 8 on the right of the power socket, does this mean i have 2 options in the way i plug the power lead in? ie leaving 1 & 2 pins spare or the other option leaving 7 & 8 pins spare, does it matter or will it only fit in one way. Sorry if i sound daft but I dont wanna see £300 quid go up in smoke.

 

[MortyFire]

Got it sorted at last thx for all your help.