Supported operating system:

Windows Vista 32-bit
Windows Vista 64-bit
Windows Server 2008 32-bit
Windows Server 2008 64-bit

Release note:
Realtek RTL8111B/RTL8168B/RTL8111/RTL8168/RTL8111C/RTL8111CP/RTL8111D(L)/RTL8168C/RTL8111DP series network card version 6.239 driver for Vista/Vista-64/2008/2008-64 released on 23th June 2010.

Supported Devices:
Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC