Which driver do I use??

Im about to install a new Sapphire HD 4670 graphics card. Im new at doing this so bare with me. I know I need to remove my old card's drivers using drivesweeper or drive cleaner from what Ive read on here. Then I install the card, and once the computer comes back on, I guess it will look to install the driver. I want to use the most up to date driver, do I just update the drivers after it has been installed?

My main question is that when I go to the Sapphire website, there is a list of 4 or so different drivers for Windows XP, which do I download? How do I install them.

Thanks. I will use those. But when the computer comes up will it automatically load a driver, or will it give me the option to use the ones Ive downloaded?