Where To Download 64Bit Driver

[satimis]

Hi folks,

Windows Server 2008 64bit
Mobo - Asus M4A78T-E
CPU - AMD Phenom II X4 955
Virtualization software - KVM

Windows Server 2008 is running on this Virtual Machine as client (VM). It is working except following 2 devices

Audio
USB Mass Storage

No sound. USB flash drive can't be detected. Please advise where can I download the respective drivers. TIA

B.R.
satimis