Look at your modem and see if it has any identifying marks on it and if so do a google search for its drivers. They should be easy to track down.
That is the pci simple communication controller - a modem. It jsut needs drivers.
What aobut your sound card? Is it a PCI card on "onboard"? If the former, get drivers from the manufacturer. If the latter, your motherboard CD should have drivers - if not, the manufacturer will have some.