lothia

You don't need to learn C++, it all depends what you want to make and how powerful. Programming languages like Java, C++, C etc are High level languages and usually if you know one it is quite easy to learn another. C++ is usually not recommended for a first language because it is not as clear cut and clean as other languages. That is simply because you have more freedom in C++. For your first language I would truely suggest Java, or Visual Basic.
Anywho, learning how to make a game really doesn't take that long, but the understanding of it kind of does. A MMO is even harder.

__________________