Q. How can I check or change the media access control (MAC) address for a Microsoft Virtual PC 2004 instance?

A. Virtual PC creates a new MAC address each time you create a new Virtual PC instance (the software stores the instance in the .vmc file). To check which MAC address Virtual PC is currently configured to use for a specific instance, open the .vmc file in a text editor and look for the ethernet_card_address entry:

&ltethernet_card_address type="bytes"&gt

To change the MAC address, simply edit the ethernet_card_address value when the Virtual PC instance isn't running and save the edited .vmc file

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