高分请教：关于读取网卡号的问题

[noaskme]

现在csdn上找到的几段读网卡号的vb程序在我的ibm笔记本上都读不出网卡号，
在台式机上好像可以，我看csdn上也有人说是有的机器上读不出，
请问哪位有改善的方法？请指点
急等。。

附原来的程序：
Option Explicit

Public Const NCBASTAT As Long = &H33
Public Const NCBNAMSZ As Long = 16
Public Const HEAP_ZERO_MEMORY As Long = &H8
Public Const HEAP_GENERATE_EXCEPTIONS As Long = &H4
Public Const NCBRESET As Long = &H32

Public Type NET_CONTROL_BLOCK 'NCB
ncb_command As Byte
ncb_retcode As Byte
ncb_lsn As Byte
ncb_num As Byte
ncb_buffer As Long
ncb_length As Integer
ncb_callname As String * NCBNAMSZ
ncb_name As String * NCBNAMSZ
ncb_rto As Byte
ncb_sto As Byte
ncb_post As Long
ncb_lana_num As Byte
ncb_cmd_cplt As Byte
ncb_reserve(9) As Byte ' Reserved,&nb sp;must be 0
ncb_event As Long
End Type
Public Type ADAPTER_STATUS
adapter_address(5) As Byte
rev_major As Byte
reserved0 As Byte
adapter_type As Byte
rev_minor As Byte
duration As Integer
frmr_recv As Integer
frmr_xmit As Integer
iframe_recv_err As Integer
xmit_aborts As Integer
xmit_success As Long
recv_success As Long
iframe_xmit_err As Integer
recv_buff_unavail As Integer
t1_timeouts As Integer
ti_timeouts As Integer
Reserved1 As Long
free_ncbs As Integer
max_cfg_ncbs As Integer
max_ncbs As Integer
xmit_buf_un As Integer
max_dgram_size As Integer
pending_sess As Integer
max_cfg_sess As Integer
max_sess As Integer
max_sess_pkt_size As Integer
name_count As Integer
End Type

Public Type NAME_BUFFER
name As String * NCBNAMSZ
name_num As Integer
name_flags As Integer
End Type
Public Type ASTAT
adapt As ADAPTER_STATUS
NameBuff(30) As NAME_BUFFER
End Type

Public Declare Function Netbios Lib "netapi32.dll" (pncb As NET_CONTROL_BLOCK) As Byte
Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Public Declare Function GetProcessHeap Lib "kernel32" () As Long
Public Declare Function HeapAlloc Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, ByVal dwBytes As Long) As Long
Public Declare Function HeapFree Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, lpMem As Any) As Long

Public Function GetMACAddress() As String

Dim tmp As String
Dim pASTAT As Long
Dim NCB As NET_CONTROL_BLOCK
Dim AST As ASTAT
NCB.ncb_command = NCBRESET
Call Netbios(NCB)
NCB.ncb_callname = "* "
NCB.ncb_command = NCBASTAT
NCB.ncb_lana_num = 0
NCB.ncb_length = Len(AST)
pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, NCB.ncb_length)
If pASTAT = 0 Then
Debug.Print "memory allocation failed!"
Exit Function
End If

NCB.ncb_buffer = pASTAT
Call Netbios(NCB)

CopyMemory AST, NCB.ncb_buffer, Len(AST)
tmp = Format$(Hex(AST.adapt.adapter_address(0)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(1)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(2)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(3)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(4)), "00") & " " & _
Format$(Hex(AST.adapt.adapter_address(5)), "00")


HeapFree GetProcessHeap(), 0, pASTAT

GetMACAddress = tmp

End Function

[TechnoFantasy]

IP Wizard是一个在Windows2000下运行的程序，可以获得当前系统中所有的TCP/IP网络设定的信息。包括IP地址、网络掩码、网卡MAC址(如果有的话)。该程序使用了Windows Management Instrumentation (WMI)。

http://www.applevb.com/sourcecode/ipwizard.zip

[noaskme]

ip wizard中列出了一堆网卡，我怎么来确定本地连接使用的是哪块网卡？
能不能给个比较简单的代码例子？直接读取用于本地连接的网卡？

[noaskme]

找到了相关的代码，谢谢冰儿马甲。。
http://www.applevb.com/art/ar_wmi.htm