Unfortunately, you will not find any original Toshiba drivers for Win98 for this unit.
I have goggled around and it seems that this notebook was delivered only with Win XP and therefore the drivers are not available.
Furthermore the Win98 is a very old OS and the Satellite L100 was designed several months ago. Nobody uses teh Win98 on such notebook. Everybody want to install the new Vista

I don’t want to dash your hope but I don’t think that Toshiba will create the Win98 drivers for this notebook.
What you can do is to check the net for different drivers which could be compatible with the single notebook devices... good luck