It doesn't take long at all. Your method probably needs improvement.
Since the game for the DS hasn't been out long, people haven't had a chance to explore the game and discover cheats, glitches, and loop holes. My advice? Wait a week or two more and then search. Or you could keep searching until you find something. A great website for cheats is cheat code central.com, if I remember right.
You could copy a video game as long as its on a disk and if you have the right programs on your PC
There are some tricks which can use to score more which can be read at http://www.whatpeoplethinks.com/2009/10/monkey-kick-off-cheats.html
Depends on which game. It varies...
There arn't "Cheats"... You could just play the game or spend a long time modding it. There are console commands but only for the PC.
6 days
When you activate a cheat then it normally lasts till you switch the game off.
The Microsoft Flight Simulator series of video games has been a long running and popular flight simulation game.
There are various cons associated with being a video game creator. For example, you will have to work very long hours with lots of overtime.
Simply put: No. Not by a long shot.
2 years, or more
I think the can if you play a long time. If you read your video game manual on the first page it tells you