There is the simple interpretive programming language and, actually, console interpreter.exe. Need to make colorizing of syntax, autocomplete and executing by press F5. (if it is possible to make 'debug' - that will be awesome!)
I never did such things. There are many IDE, which allow to add lang.: eclipse, NetBeans, emacs, ... But I did not found complete instruction to add or they are ununderstandable.
What IDE is best to use? to add lang. as easy as possible? (it will be cool, if IDE can work in Windows) How to add my language there? Please, if it is possible to give complete instruction.
Depending on how far you really want to go there are multiple options:
lex
and yacc
, if we are talking open source. I don't know which proprietary source tools are out there. If you want to get into that, there are several good pages on that topic, and this is one of them.