Este codigo lo hace ok
Set conectar = Server.CreateObject("ADODB.Connection")
conectar.Open("DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath("basededatos.mdb"))
Set rs=Server.createobject("ADODB.Recordset")
rs.ActiveConnection = conectar
rs.Source = "solicitud"
rs.LockType = 2 'Importante, aqui le das permiso a la BD para grabar
rs.open
rs("valor")="lo que sea"
rs.update
rs.close
conectar.close
Set rs = nothing
Set conectar = nothing
%>
Espero que te sirva .. OONAI