Excel – Using ADODB in VBScript to find the number of rows in an Excel sheet

I'm trying to use ADODB in VBScript to access an Excel file to find the number of rows in a given sheet that have data entered into them. My code so far displays everything on the sheet, but I'm not sure how I could count the rows or directly find the number of rows using a query. I want to use ADODB as it doesn't open the Excel file directly, but if this isn't the best way then how could I do it otherwise? Thanks.

Set adodb = CreateObject("ADODB.Connection")
adodb.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & _
              "test.xls" & ";Extended Properties=""Excel 8.0;IMEX=1;" & _
              "HDR=NO;" & """"

Set result = adodb.Execute("Select * from [Sheet1$]")

MsgBox result.GetString 

result.Close
adodb.Close
Set adodb = Nothing
Set result = Nothing