WinToFlash allows you to create a bootable thumb drive that you can boot and run Windows XP-10 from.

This utility is easy to use starting with a wizard that will help walk you through the process of creating your bootable thumb drive. Advanced users can skip the wizard and use the advanced tab. It also features a lot of advantages just for backup purposes. How many times have you lost your Windows DVD or scratched it making it useless? Worst case scenario you will have a backup of your copy of Windows, and we all know how important a backup is.

WinToFlash isn't just for Windows but any bootable"LiveCD" images including Hiren's Boot CD, Android, Ubuntu or Xubuntu, WinPE based on XP (BartPE) and much more. At last check at least 90 known LiveCD images are supported.