DOS-on-USB lets you install MS-DOS 7.1 on your USB memory key. After formatting your flash drive, you can install a full working version of MS-DOS to let you run games or system utilities. The best thing about having a DOS-bootable memory key is you can boot into it on any computer, just like a CD.

Read more: DOS-on-USB – CNET Download.com http://download.cnet.com/DOS-on-USB/3000-2094_4-10795476.html#ixzz2Clx1tlY9