I have had no floppy in my tower for a year or so, but in order to do what you need, i would say that the easiest way is to create a cd with a boot image with nero. Click on bootCD then nero will ask you for an image file. drop the floppy into your drive a copy/extract onto CD,. Nero does this. Keep an image in your HDD for future then remove floppy from tower. I personally have never done this myself, and I have never needed the floppy. But if the situation came, then reinstalling floppy for a one time deal would not be a big thing.
Heeter