I ''ve seen several posts talking about DOS recently. And quite a number of people here seem to like DOS. I myself don''t use DOS very often, but I think that command line is a really powerful tool and I like it too. I am NOT going to start a argument arguing whether DOS is better than other OS such as Windows, Linix, UINX etc. Just face reality that DOS is used less frequently nowadays. But never mind because I ''ve got a CRAZY idea here. If you love DOS that much, why not write one yourself? I know it sounds a bit crazy, but you need not implement all those complex things at once. It can be treated as an GOOD experience for both beginners and experts. I am not a good programmer of any kind. I ''ve learnt programming for just a short time and not knowing much. I think doing this BIG project can learn a lot. If anyone is going to do this, I am eagar to see the source code so as to learn. But I may not be able to join it since I am a student and a lot of homework and assignments are waiting for me. So I would learn by those code instead. If to you this is a really a crazy idea, then just forget it and forgive me for my foolish.