I need a big help, please? please?

i have an asus p4b motherboard, but i've lost my motherboard driver, i have already check it to the asus web site but i can't find the motherboard driver, so i can't set my configuration correctly. and another problem seem to be the same but the problem is with my intenal modem, i have lost the driver too, the name of the modem is prolink 90782648 T56PIG, but the chipset is using lucent chipset, i've already checked it to the prolink and lucent website but i can't found the driver. could somebody please help me, just to inform me where can i get those driver. thanks a lot guys