Hi,
To find the network adapter's MAC Address, you can type ipconfig/all, and then press Enter.
To find the BlackBerry's MAC Address, follow these steps:
Click the Menu key, then select Options, then Status.
Find WLAN MAC and make a note of the address, which will appear without hyphens.
If the above does not work for you, please use an Internet search to find instructions on locating the MAC address of your BlackBerry. Be sure to include your BlackBerry's model information in the search terms, as in: locate blackberry 7210 mac address.
To find the MAC Address via code, you'd better use the Microsoft Developer Network:
Windows Vista Developer Center
http://msdn.microsoft.com/en-us/windowsvista/default.aspx
Thanks.