Rundll.32.exe?

I just downloaded windows media player 11 and was just looking over my firewall and foulnd this-

 

windows/system32/rundll32.exe is preparig to access the internet---detected

 

I tried googling this but didnt get much, could someone explain to me what this is? thanks! By the way I would be very greatful if someone could help me out with my uinstall problems for Norton safe web! thanks again.