help needed to power pci-e graphics card

dubdvd

Got myself a X800XT pci-e graphics card from peats ...it was meant to be an asus card but when they got them it was a sapphire ...if anyone has read up on this they will know that ati,s pci-e card use lower power than agp ....pci-e use,s 70watts and a new 6 pin connection instead of the normal 4 pin molex .... and the mobo uses 24 pin power for the mobo instead of 20 ..the psu i have is a antec smart-power 450 ...but to power the graphics and mobo fully i need the new ver.2 atx power supply and the only one i know of is the antec neo power which ive ordered but wont be in till the end of the month
saphire has not given me and dont give anyone a convertor cable that runs from the 4 pin to the new 6 pin graphics power socket on the card ...asus do ship one with there cards ...so untill i get my new psu .. im left with a highend graphics card sitting here in its box ...those anybody out there know where on earth i can pick up this convertor cable ....im going mad to get this baby up and running
thanks in advance