Hi..
Wintoflash is a great software that help you creating windows usb bootable so that you can clean install or repair your computer using usb. say no more to DVD installer hehe...
the advantage using usb is, usb have higher read rate compare to dvd. so when you load up the installer resource, it faster compare to dvd. it also make life easier when it has no problem like dvd has. (disk failure, disk scratch) .
here is the web
WinToFlash - Install Windows from usb
support the creator by donate for the software.
p.s: this software is mark as BETA... but actually it is can perform well... ^_^