...there are several possibilities to get the MDK officially. http://go.metastock.com/forms/trial?whc=ZenTrader&pc=eq-ZenTrader (you have to go to their "partner btw. solutions for developers" page) The big advantage of Metastock is the ease-of-use and high quality of the tool for beginners or non-programmers and the optional possibility to extend the script language functionality via the MDK. Currently therefore you must be able to program in a higher language, which generates native Win32 DLLs (like C/C++, Delphi or PowerBasic). My recommendation ist the last one - but that depends on your knowledge: http://www.powerbasic.com/ bye, zentrader