You can also try searching for the latest driver (5.810.1218.2012)
for Windows 7 in Google.
If you know the download link for the latest driver for Windows 7,
please register and submit it to help other users.
The Realtek RTL8168B/8111B Family PCI-E Gigabit Ethernet NIC (NDIS 6.0) drivers package contains drivers required for the 10/100/1000M Gigabit Ethernet PCI Express Network Interface Controllers.
This driver package is compatible with Windows Xp ,Windows Vista ,Windows 7 and Windows 2000 operating systems.