Run CMD (elevated) and type: diskpart list disk (*now find your USB disk number, you'll find it by its size) select disk 1 (*if your USB is disk 1) clean create partition primary select partition 1 (*this is 1, no matter what number is your USB disk) active format fs=fat32 (or ntfs, works with both) assign exitNote: Don't type the things in parentheses above!!
Step 2. Copy Windows 7 or Vista's DVD content to the Flash Disk
Still on CMD, assuming your dvd is drive d: and your usb is drive e:
xcopy d:\*.* /s/e/f e:\
You're done. Works perfectly.You'll make the fastest install ever.