database "compile error"

[merhaba]

Hi,
Help me to get the following program working..It is a simple example of a database
but I get a"Compile error" saying "User-defined type not defined" for the underlined lines below...
Could you please correct my code?
thanks...

Dim [U]rsMyRS As Recordset[/U]
Dim dbMyDB As Database
Private Sub cmdUpdate_Click()
rsMyRS.Edit
rsMyRS!Phone = txtPhone.Text
rsMyRS.Update
End Sub
Private Sub cmdDelete_Click()
rsMyRS.Delete
lstRecords.RemoveItem lstRecords.ListIndex
End Sub
Private Sub cmdNew_Click()
rsMyRS.AddNew
rsMyRS!Name = "A New Person"
lstRecords.AddItem rsMyRS!Name
lstRecords.ItemData(lstRecords.NewIndex) = rsMyRS!ID
rsMyRS!Phone = "Person's Phone Number"
rsMyRS.Update
End Sub
Private Sub Form_Load()
Set dbMyDB = OpenDatabase("C:\MyDatabase.mdb")
Set rsMyRS = dbMyDB.OpenRecordSet("MyTable", dbOpenDynaset)
If Not rsMyRS.EOF Then rsMyRS.MoveFirst
Do While Not rsMyRS.EOF
    lstRecords.AddItem rsMyRS!Name
    lstRecords.ItemData(lstRecords.NewIndex) = rsMyRS!ID
    rsMyRS.MoveNext
Loop
End Sub
Private Sub lstRecords_Click()
rsMyRS.FindFirst "ID=" & Str(lstRecords.ItemData(lstRecords.ListIndex))
txtPhone.Text = rsMyRS!Phone
End Sub