Thinking about a new mobo and amd 64bit but looking at my psu it has a atx 20 pin,aux power connector,atx12v cable, fan only, fan sensor cable and sata cables ok now my thinking is tht new mobos like pci-e will have 24 pin for my atx cable but i only have 20 does the atx12v cable make it up2 24 or as ive read tht it will plug into somewhere near the cpu on the mobo ? also do pci-e cards need a connector from the psu? if so can some1 show me a pic of wht it wqould look like so i can see if i have it cause i dont fancy changing my psu

any help is appreciated