Hi LT2 I'd suggest that you create a stochastic in whatever the MetaStock Formula Language was back in DOS days (I only go as far back as MS 6.5 for Windows), and change parameters until you can match the canned version. Something along these lines might get you started but the chances are that the following code will not run in the DOS version of MS. {Stochastic Oscillator (MFL)} Pd1:=Input("Stochastic Oscillator, %K Time Periods",1,99,10); Pd2:=Input("%K Smoothing",1,99,3); Pd3:=Input("%D Smoothing",1,99,3); StochOsc:=Sum(C-LLV(L,Pd1),Pd2)/ Sum(HHV(H,Pd1)-LLV(L,Pd1),Pd2); StochOsc; Mov(StochOsc,Pd3,S); Notice that the last line is using a "Simple" moving average. The canned version probably allows you to use any one of five types of MA. The Variable MA (initially known as VIDYA) would probably not have been available to the DOS version. Roy