IF anyone out there would be kind enough to guide me down the right direction... Im trying to reformat a laptop but the laptop does not have a cd/dvd drive...I do not want to purchase a external drive i want to know how to reformat using a thumb drive. So i have the entire Operating system cd (windows xp pro) copied to external hard drive with all the files and so forth...its just a little different apposed just popping in the CD and it loading the files for you automatically after your press any key to boot from cd.. Now i know how to change the boot sequences so that i can boot from Usb.. just a little unclear...If anyone can help me out with some step by step instructions it would be much appreciated.