I remember earlier making bootable usb was a big task. Also after so much of effort, chances were that it might not work because of some errors in making process. But now with unetbootin, its really easy. I tried it with different versions of windows (even xp) and it worked always. Just two step to follow once the program is with you. All you really need is the program (download from http://unetbootin.sourceforge.net/ ) and the iso image file of your OS, and a spare usb (4gb I prefer, as it will be sufficient for all windows editions). Run the program and it will make it in easy steps. If one is facing problem in installation, the common reason is FAT32/NTFS format. If your usb format is different, format it accordingly and try again. Otherwise, I never faced any problem in installing OS in laptop/pc/netbook.
Life is defined by thoughts and perceptions. Training your thoughts can do wonders to a human life. One can remodel the whole network of thoughts and perception to attain a healthy mind and body. Its neither easy nor impossible. Give it a sincere try and see the results.