UNKNOWN ETHERNET CONTROLLER PROBLEM

Hello,
I HAVE A PROBLEM I HAVE A DELL INSPIRON 530S.
I USED TO HAVE VISTA ON IT , BUT THEN I GOT SPYWARES AND VIRUSES.
I HAD TO REFORMAT IT TO WINDOWS XP MEDIACENTRE EDITION 2005.

NOW I HAVE A PROBLEM MY ETHERNET CONTROLLER IS NOT THERE.
THERE IS A QUESTION MARK BESIDE ETHERNET CONTROLLER.

I USED UKD FINDER BUT DIDN'T HELP ME MUCH.
ONE THING I KNOW IS ITS FROM INTEL.

COULD SOMEONE HELP ME ASAP.
THANK YOU