Is it possible to make a game for a mobile phone?

Im a new newbie(means that i completely unaware of J2ME programing)
I wonder if it is possible to make a game to my pc for a mobile phone and then send it to the mobile using Irda
..or more generally if a mobile phone uses or supports j2me can i change the menu(ex add something like a calculator)
Thanx!!

Yes, if your phone supports both J2ME and reciving applications by IRDA, but you will need to learn Java, and the J2ME APIs.
http://developer.java.sun.com/developer/onlineTraining/

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