You will not the drivers because this “Vista designed” notebook is not supported for this old operating system. Maybe you can find drivers for WXP but not for W2000.
All you can do is to search the drivers on the net and hope you will have success with it.
I don't know why you want to do this but maybe you should accept that on some point Toshiba must say “stop” and don't waste the time with support for old operating system. I also believe that 0,01% people want to use this old OS on notebooks of new generation.
There is no sense for doing support for W2000. What do you think about it?