Need Help Installing Aurora R3 Ethernet Controller Driver

I am trying to install the driver that allows me to have access to a direct wired internet connection.  I have tried updating the driver for ethernet controller but it finds nothing online nor do I know where to find it on the disks that came with my pc.  I am able to access the internet via wireless and have the disks that came with my computer I simply would like to install the appropriate driver for the ethernet controller so I can access a wired internet connection.  

PC specs

OS Name Microsoft Windows 7 Home Premium
Version 6.1.7601 Service Pack 1 Build 7601
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name RYAN-PC
System Manufacturer Alienware
System Model Aurora-R3
System Type x64-based PC
Processor Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz, 3101 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date Alienware A05, 2/11/2011
SMBIOS Version 2.6
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.1.7601.17514"
Time Zone Eastern Daylight Time
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 16.0 GB
Available Physical Memory 12.6 GB
Total Virtual Memory 16.2 GB
Available Virtual Memory 12.5 GB
Page File Space 200 MB
Page File C:\pagefile.sys

Thank you very much for any help with this issue.