Import Access To Excel?

I am trying to import database records into Excel, but i keep getting an error "run-time error 424" on the code below.

It is probably something simple, but i havent tried importing from Access to Excel before.

The code below should clear the data from "Existing" and then copy the data from test.mdb into the same sheet.

The error occurs when opening "Data Source"

Code:
Private Sub Workbook_Open()
Dim cnn As New ADODB.Connection
Dim rst As New ADODB.Recordset
Dim dbCommand As New ADODB.Command
RowCount = Worksheets("Existing").Range("A" & Rows.Count).End(xlUp).Row
Worksheets("Existing").Range("A2:V" & RowCount).ClearContents

[code]....