Creating A bootable Pen Drive

creating bootable pen drive  follow the below steps.....................

1. U must have an OS image as "winxp.iso" or win7.iso or nrg(if you don't have search in google for that)
2. To download PowerIso click Here Download
3. format pen drive
4. go to tools option and  click create bootable usb drive
5. Select iso file and click on start