COM+组件连接数据库失败

我用vb 6.0写了一个测试COM+下远程传输Recordset对象的例子，组件的TestC返回long值，Test返回一个recordset对象。
虚拟机server 2003，本机是win7 64位操作系统。
我在虚拟机里面和win7系统下运行相同代码测试这两个方法，虚拟机里面能执行返回结果，win7下只能执行TestC方法，执行Test方法报用户sa不能登录。网上找了一下，也没有找到解决方法，求指教。

com+组件代码：
Option Explicit

Dim conn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim count As Integer

Public Function Test() As ADODB.Recordset
Dim strconn As String
strconn = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;pwd=sa;Initial Catalog=Northwind;Data Source=UFO-EBB345CC64C"
conn.ConnectionString = strconn
conn.CursorLocation = adUseClient
conn.Open
rst.ActiveConnection = conn
rst.Source = "select * from orders"
rst.Open
Set Test = rst
End Function

Public Function testC() As Long
count = count + 1
testC = count
End Function

Private Sub Class_Initialize()
count = 0
Set conn = New ADODB.Connection
Set rst = New ADODB.Recordset
End Sub

Private Sub Class_Terminate()
If rst.State = adStateOpen Then rst.Close
Set rst = Nothing
If conn.State = adStateOpen Then
conn.Close
End If
Set conn = Nothing
End Sub

远程客户端代码和本地的测试代码：
Option Explicit
Dim ts As proRemote.clsRemote


Private Sub Command1_Click()
Dim s As Integer
s = ts.testC
MsgBox CStr(s)
End Sub

Private Sub Command2_Click()
Dim ss As ADODB.Recordset
Set ss = ts.Test
MsgBox ss(2)
ss.Close
Set ss = Nothing
End Sub

Private Sub Form_Initialize()
Set ts = New proRemote.clsRemote

End Sub

Private Sub Form_Terminate()
Set ts = Nothing
End Sub