Mac Address and IP.

Hi.
I found the way of getting the list of IP addresses in my computer.
I found the way of getting the list of physical Address of my addapters.
How do I know which physical Address belongs to which IP.
As for now I have 2 ComboBoxes which I have to choose from , I would like to
have one ComboBox and one TextField (readOnly) which will show me the MAC.

As for now I run IpConfig/All and get the Mac address from each IP.

TIA
 Moish.