I´m with the same trouble tah you, but get some solutions:
About de PCI-Express video Card:
You must install de North Bridge Chipset (ATI Express 200).
Find it for 32 and 64bits at:
After the install you´ll can install your pci-e vga card driver
About the sound I´ll cotninue searching, onetime that the links above don´t are functionally.
at last, excuse-me about my english. It´s very poor.