my internet not working???

i just recently reformated my hard drive and i got some of my drivers here is my system so if you could help me, the device manager says a yellow question mark next to somthing called ethernet controller and the ether net cord is pluged in and i get a light but no blinking light, and it doesnt detect the cable so if u could help me that would be great.

Field     Value

Computer        

Operating System            Microsoft Windows XP Professional x64 Edition

OS Service Pack    Service Pack 1

DirectX            4.09.00.0904 (DirectX 9.0c)

Computer Name            KEVIN

User Name            Administrator

Motherboard   

CPU Type            DualCore Intel Pentium D 930, 3000 MHz (15 x 200)

Motherboard Name   Dell Dell DM051

Motherboard Chipset Intel Lakeport-G i945G

System Memory            1024 MB  (DDR2-533 DDR2 SDRAM)

BIOS Type            Phoenix (03/31/06)

Display

Video Adapter            Radeon X1300 Series Secondary  (512 MB)

Video Adapter            Radeon X1300 Series  (512 MB)

Monitor            Plug and Play Monitor [NoDB]  (6418066A1NGS)

Multimedia      

Audio Adapter            Intel 82801GB ICH7 - High Definition Audio Controller [A-1]

Storage           

IDE Controller            Intel(R) 82801G (ICH7 Family) Ultra ATA Storage Controllers - 27DF

IDE Controller            Intel(R) 82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controller - 27C0

Floppy Drive            Floppy disk drive

Disk Drive            WDC WD3200AAKS-00B3A0  (298 GB, IDE)

Disk Drive            SanDisk U3 Cruzer Micro USB Device  (1945 MB, USB)

Optical Drive            PHILIPS DVD+-RW DVD8801

Optical Drive            SanDisk U3 Cruzer Micro USB Device

SMART Hard Disks Status            OK

Partitions         

C: (NTFS)            305234 MB (297898 MB free)

Input   

Keyboard            HID Keyboard Device

Mouse  HID-compliant mouse

Network         

Modem            Conexant D850 56K V.9x DFVc Modem

Peripherals      

USB1 Controller            Intel 82801GB ICH7 - USB Universal Host Controller [A-1]

USB1 Controller            Intel 82801GB ICH7 - USB Universal Host Controller [A-1]

USB1 Controller            Intel 82801GB ICH7 - USB Universal Host Controller [A-1]

USB1 Controller            Intel 82801GB ICH7 - USB Universal Host Controller [A-1]

USB2 Controller            Intel 82801GB ICH7 - Enhanced USB2 Controller [A-1]

USB Device            USB Composite Device

USB Device            USB Human Interface Device

USB Device            USB Human Interface Device

USB Device            USB Mass Storage Device