d choose the time, currency type, keyboard and input methods which are proper for you.
6) “Start installing” interface appears, (attention, don’t click “Now install”), click “Repair my computer” on the left bottom corner, enter “choice system recovery”, choose the last item “Command prompt” to enter DOS window.
7) Type “D:\7057\sources\setup.exe” (without the quotation marks), and then start installing.
8) Choose install language, format the disc C.
6. Brand new Windows 7 installation in Vista system (it is proved that it’s very convenient for XP using this method.)
1)  Download Windows 7 7057ISO image, copy to other drive except C with virtual CD-ROM (such as D:\7057)
2) Copy the Boot, EFI, sources folder and bootmgr to the root of drive C D:\7057 to the root of drive C.
3) Copy the Bootsect.exe under “D:\7057\boot” to the root directory of drive C.
Note: because of Vista system UAC, the second step needs administrator’s identity.
4) Run cmd with administrator identity, type “c:\bootsect.exe/nt60 c:” and press Enter;
5) Restart system and enter installation interface, click “Repair my computer” on the left bottom corner.
6) Choose the last command prompt to enter DOS window, type “D:\7057\sources\setup.exe” and enter installation interface.
7) Choose to install language package and form