砌機後安裝windows7 問題...(20分)

各位高手...
我岩岩琴日自己砌左部腦... (我係新手.. 睇住說明書砌既~)
因為資金有限, 無買到隻hdd...
用返舊電腦果隻..

開機都無咩問題, 入左隻win7碟入去裝,
佢就話
"TO INSTALL THE DEVICE DRIVER NEEDED TO ACCESS YOUR HARD DRIVE"
叫我用media storage裝driver,
即係去到呢步:
http://portable.easylife.tw/pic/files/1/200909/window7/Windows7_install_step09.jpg
(partician果度係空既, 佢要我禁load driver...就出果句,,,)
不過又無講裝咩DRVIER?___?
跟住就裝唔到落去喇...
係咪即係要裝hdd driver呀..?
我hdd係用緊呢隻..
http://support.wdc.com/product/download.asp?groupid=606&lang=cn
佢個web site又無話有得dl driver>"<

不過唔知點解, 我呢個hdd係上一部電腦用緊無format過, 但都無哂d野既..?

唔知點算... 長左少少唔好意思.. 希望可以幫到我啦... 唔該哂