when you execute "lspci -v" on the machine you'll find the hardware and (if a kernelmodule for this hardware is loaded) it shows which module is used.
As a quick solution to find out which networkcard you have use
lspci | grep -i eth
If you don't have access to the machine, go to the Toshiba-site http://toshiba-asia.com/portal/publi...entTab=service
and load the Windowsdriver down, unzip it and look what it is.