Another thing to note is that SP1/SP2 TER files only go up to TER34. However WinSPWW2/SPMBT have more TER files. So how do you create zoom levels for TER70z4? Well You simply rename it to TER00Z4 and then use SP1 or SP2 to do the other zoom levels and finaly rename the TER00Z files back to TER70.