I would suggest buying and installing a IDE-Compact flash adapter instead of the harddrive.
It's much easier and faster to write an image to, and gets you around the problems of having to find workable floppy disks.
(you will also need a pc with card reader to do this)
Then it's just a matter of following this guide:
http://www.sonido-7.com/d8b/tpis.html#Post24
Feel free to ask questions if it doesn't make sense
Regards
Anders