新建一《SERV-U》FTP服務器，在ASP中修改指定帳戶的密碼，寫了一ASP組件來修改《SERV—U》  FTP密碼。
啟動《Vb6.0》，選擇新建ActiveX DLL，更改工程屬性中的工程名稱為“Ftpcommand”，將CLASS名改為XJNFTP，源程序如下：

Private Const scUserAgent = "vb wininet"
Private Const INTERNET_OPEN_TYPE_PRECONFIG = 0
Private Const INTERNET_OPEN_TYPE_DIRECT = 1
Private Const INTERNET_OPEN_TYPE_PROXY = 3
Private Const INTERNET_INVALID_PORT_NUMBER = 0
Private Const FTP_TRANSFER_TYPE_BINARY = &H2
Private Const FTP_TRANSFER_TYPE_ASCII = &H1
Private Const INTERNET_FLAG_PASSIVE = &H8000000
Private Const INTERNET_SERVICE_FTP = 1
Private Const INTERNET_SERVICE_GOPHER = 2
Private Const INTERNET_SERVICE_HTTP = 3
Private Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
(ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, _
ByVal sProxyBypass As String, ByVal lFlags As Long) As Long
Private Declare Function FtpCommand Lib "wininet.dll" Alias "FtpCommandA" _
(ByVal hConnect As Long, ByVal fExpectResponse As Boolean, ByVal dwFlags As Long, _
ByVal lpszCommand As String, ByVal lContext As Long, phFtpCommand As Long) As Boolean
Private Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
(ByVal hInternetSession As Long, ByVal sServerName As String, ByVal nServerPort As Integer, _
ByVal sUsername As String, ByVal sPassword As String, ByVal lService As Long, _
ByVal lFlags As Long, ByVal lContext As Long) As Long
Private hOpen As Long
Private hConnection As Long
Private Declare Function InternetCloseHandle Lib "wininet.dll" _
(ByVal hInet As Long) As Integer
Private newPASSWORD As String
Private oldPASSWORD As String
Private userName As String
Private URLSTR As String


‘修改FTP密碼主程序
Public Function getStr() As String
hOpen = 0
    hConnection = 0
    Dim nFlag As Long
    Dim strCmd As String
nFlag = INTERNET_FLAG_PASSIVE
‘建立FTP修改密碼命令字符串
strCmd = "SITE PSWD " & oldPASSWORD & Space(1) & newPASSWORD
‘建立internet連接
hOpen = InternetOpen(scUserAgent, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0)
If hOpen = 0 Then getStr = "不能打開連接。..."
If hOpen <> 0 Then
‘與FTP服務器建立連接
  hConnection = InternetConnect(hOpen, URLSTR, NTERNET_INVALID_PORT_NUMBER, _
  userName, oldPASSWORD, INTERNET_SERVICE_FTP, nFlag, 0)
   If hConnection <> 0 Then
    bret = FtpCommand(hConnection, False, FTP_TRANSFER_TYPE_ASCII, strCmd, 0, hFile)
       If bret Then
         getStr = "密碼修改成功!..."
         Else
         getStr = "密碼修改失敗!..."
       End If
    Else
       getStr = "無法登錄至FTP服務器，請檢查帳戶名或密碼是否正確。"
   End If
End If
‘斷開internet連接
If hConnection <> 0 Then InternetCloseHandle (hConnection)
‘斷開FTP服務器連接
If hOpen <> 0 Then InternetCloseHandle (hOpen)
End Function
‘傳入FTP服務器的URL
Public Property Let URL(URL1 As String)
URLSTR = URL1
End Property

‘傳入FTP原有密碼
Public Property Let oldPSD(psd As String)
    oldPASSWORD = psd
End Property

‘傳入FTP新密碼
Public Property Let newPSD(psd1 As String)
     newPASSWORD = psd1
End Property

‘傳入FTP帳戶名
Public Property Let user(psd2 As String)
     userName = psd2
End Property

編譯成Ftpcommand.DLL，在ASP服務器端注冊該組件，（VB6.0在ASP服務器中自動注冊），在ASP中調用該組件，源程序如下：
<%
‘接受傳入的帳戶名
user=trim(request.form("id"))
‘接受傳入的原密碼
psw=trim(request.form("password"))
‘接受傳入的新密碼
pswx=trim(request.form("passwordx"))
‘創建FTP組件應用實例
Dim obj
Set obj = Server.CreateObject("ftpcommand.xjnftp")
‘給FTP組件傳送帳戶名
obj.user=user
‘給FTP組件傳送原密碼
obj.oldpsd=psw
‘給FTP組件傳送新密碼
obj.newpsd=pswx
‘給FTP組件傳送FTP服務器域名地址（URL）
obj.url="ftp://ftp.luckybbs.com"
rr=obj.getstr()
Response.Write("<meta HTTP-EQUIV=REFRESH CONTENT=3;URL=/main.asp>")
Response.Write("<p><center><font color=#ff0000>"+rr+"!")
Response.Write("<center><font color=#ff0000>系統3秒鐘后自動返回！！！</font></center>")
Response.Write("<br><center><a href=main.asp>返回</a></center>")
set obj=nothing
response.end
%>

本實例在WINDOWS 2000 SERVER ，IIS 5.0 ，SERV-U4.0 ，VB6.0中通過。