The easiest way to do this is to run the install.exe/setup.exe from the floppy that came with your cd-rom drive, let it write the files to your config.sys and autoexec.bat, do a format & copy system files, copy mscdex (should be in windows) to the floppy, and make sure that the auto/config files are set to point to it on the floppy rather than hard drive. Also make sure you have utilities like fdisk/format on the floppy before you trash.

Actually its not that easy if you have not done it b4 is it

Have a go,
Jon