Laptop with usb adapter

i have a laptop with 98SE. i want to use it to get online
using Cable. there is no ethernet adapter so i bought a
netgear FA120 USB 2.0 adapter. the adapter will not
sucessfully install. it is listed under device manager
but has the yellow explanation mark. when i try to update
the driver i get the message "unable to find file" i can
see the file on the cd, i know its there but windows wont
read it. any ideas? also, i called their help support and
the guy was useless.

Thomas