A BASIC program would probably be your best bet. It would be easier to write and the equations for the kind of stuff you're probably doing won't be too slow this way. I AGREE. _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866]