Find antal poster i et record set?

Hvordan finder jeg antallet af poster i et record set.

Set objRs = Server.CreateObject("ADODB.Recordset")
objRs.Open "SELECT TestData.FullName, TestData.Email, TestData.CountryName FROM TestData ", strConnect

Jeg har forsøgt med:

dim msgCounter
msgCounter = 0

do until objRs.eof
    'response.write objRs("Testdata.FullName")
    msgCounter = msgCounter +1
    objRs.movenext
loop
Response.write msgCounter

Men det virker ikke!