How to install Win7 from WinPE?

[veges]

I do not have a DVD drive in my net book, how to install Win7 by booting from window PE, I have the Win7 ISO file (or the extracted ISO files in the hard disk, in the non OS partition already)? Which file suppose to run ? I have tried to run the setup.exe file in the Win7 folder, a Window pop up saying "windows installation cannot be started from the WINPE.........." Thanks
(my WINPE is booted from my USB drive)

[Devasis]

There is one more application which you can use to install Windows 7 operating system from the image file which you have created. The name of the application is BART PE BUILDER. This application helps in creating bootable Windows CD-Rom or DVD from the image file. Using BART PE BUILDER you will be able to install Windows 7 without any problem.