Sysprep.inf & getmac.exe

Does anyone know how to use the getmac.exe command within the Sysprep.inf file. I would like to have the sysprep.inf file call the getmac.exe command to display the mac address of the NIC card. After it displays the NIC informatio, I would like totake the last four digits of the MAC address an add it to the Computer name during the installation.

Robert