There may come a day that optical drives are as hard to find as 5.25 floppy drives are today.
WinToFlash starts a wizard that will help pull over the contents of a windows installation CD or DVD and prep the USB drive to become a bootable replacement for the optical drive. It can alsow do this with your LiveCD.
You don't have to worry about scratches on the disc or misplacing your original media discs once you transfer their contents to the flash drive. The optical drive is quickly becoming a thing of the past, especially in office environments, as media is shifted to the cloud.
Functions list
Windows XP/2003/Vista/2008/7 to a USB drive transfer
WinPE (BartPE based on Windows XP/2003, WinPE based on Windows Vists/2008/7 and so on) to a USB drive transfer
USB media erasing full or quick
Create a USB drive with emergency bootloader for Windows XP/2003
MS-DOS to a USB drive transfer
Create a USB drive with Windows XP/2003 Recovery Console.