DOS for Dummies by Dan Gookin
Discover why thousands of readers trust Dan Gookin to demystify DOS and teach the essentials of computing. Computers aren't simple. But you can use them effectively--without learning lots of technical stuff--Gookin tells how to look up the problem and find the answer; plus what to do when bad things happen. A first-aid kit for dealing with DOS! (IDG Books Worldwide)