speedtouch530 internet sharing

i need help about how to configure my win98 os using an alcatel speedtouch 530, i want to share my internet connection to my other four pc running also on win98os, i can’t connect my four pc to the pc where my modem is attached, i have two ethernet card on the pc the modem is attached to one of the ethernet card and the other where attached to my switch/hub. i have no driver for the alcatel speedtouch 530.