You can also try searching for the latest driver (5.780.1228.2010)
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 RTL8139/810x Family Fast Ethernet NIC drivers package contains drivers for the 10/100M Fast Ethernet PCI Network Interface Controller.
This driver package is compatible with Windows Xp ,Windows Vista ,Windows 7 , Windows 86, Windows ME and Windows 2000 operating systems.