Maybe for the same reason the poster is still running Windows 98 (and booting into DOS); because he can!
Or maybe he's running some software that just will not run in anything but 98, even in compatibility mode. And rather than going back to Windows, just remain in DOS and edit your file.
There could be lots of reasons why. For me, that does not matter (but I am curious).
The mystery (and request for help) is why the text file does not get found in Windows. That's what we're here to solve.
vip4bham - please let us know how you are booting into DOS, and if you type any other command(s) before you start editing the text file. Also please supply us with the full command you executed to get into your text editor.
ronald.