No internet connection via nic card

I have just installed mint on my computer for the first time and am unable to connect to the internet via the on board network card.
I have never used this system before only windows and do not no how to install drivers for the network card or how to find devices under the mint system.
As i am new to linux can anyone guide me

Thanks

computer specs are msi 865pe mainboard with 82547/82562 on board lan pentium 4 processor 1gb memory

Specs?

What are the basic specs of your computer? Does it have a MAKE and MODEL?