Double-click the hard drive icons- probably /mnt/hda1 is your windows C:. That should open a box sort of like explorer and display the contents of that partition.

Insert a formatted floppy. Right-click the floppy icon on the desktop and activate write mode. Doubler-click the floppy icon to open it in a window.

Broswe the HDD contents and highlight the files you want to copy. RIght-click and choose copy. In the floppy window, press your center mouse button to paste the files, or right-click and choose paste.