Convert virtual addr to physical addr by using WinDbg

http://msdn.microsoft.com/en-us/library/cc267483.aspx

about physical_address:
http://www.hex.cn/WordPress/index.php/2009/02/wince%E4%B8%8B%E8%AE%BF%E9%97%AE%E7%89%A9%E7%90%86%E5%86%85%E5%AD%98%E7%A8%8B%E5%BA%8F/