請教有關ADO的問題(編號:858)

請幫忙看看錯在那?? THANKS
錯誤訊息:執行階段錯誤 3706
ADO找不到指定的提供者

程式在自己的PC上可正確執行,但一裝到同事的PC就發生上述錯誤
相關程式碼:
Dim conn As New ADODB.Connection
  Dim rs As New ADODB.Recordset
  Dim ConnStr As String, i As Integer, SQL As String
 
  ConnStr = "Provider=Microsoft.Jet.OLEDB.3.51;" & _
       "Data Source=\\vs17a\message\IP.mdb"
 
  SQL = "Select * From IP Order By USER"
 
  conn.Open ConnStr
  rs.CursorLocation = adUseClient
  rs.Open SQL, conn, adOpenKeyset, adLockPessimistic
  rs.MoveFirst
 
  List1.Clear
  List2.Clear

While Not rs.EOF
   List1.AddItem rs.Fields(0).Value
   List2.AddItem rs.Fields(1).Value
   rs.MoveNext
  Wend

rs.Close
  conn.Close
  Set conn = Nothing