用于KOL取得MAC地址的单元，老俄对KOL的支持不错，配套设施齐全-Returns MAC address of the Ethernet network card.

　 On input, set IdxCount to an index of the card (0 is enouth,

　 if Count is not yet known). On output, Count always contains

　 number of cards. It seems that if the are several virtual

　 network devices in addition to the real network device

　 (e.g. installed with Virtual Machine emulators), the first card

　 returned actually is a real network unit.

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　 Though only Ethernet cards are looking for, Count contains

　 amount of all the interfaces (loopback, tokenring, sleep, etc.)

　 So make a loop from 0 to Count-1 until returned value become

　 <> 0 to get the MAC addres og the Ethernet network device