Installation of My Book 1TB in Windows 7 64-bit

Could anyone, please, show me how can I install My Book 1TB in operating system Windows 7 64-bit?

I installed it by the installation CD only in Windows Vista operating system. But by Windows 7 doesn’t recognize the My Book external Hard Disk. Should I download drivers for Windows 7 64-bit? And where can I download them?

Thanks for every answer.