Rotate Menu with keyboard or mouse click

Hello there! Sorry if this had been asked already, I just could not find out exactly what I want.

Well, I'm making a menu for my game, and I was thinking of a boy sit, with hands holding on something. The thing he is holding is a different candy for each option. (See image) Like, if he is holding a cookie, it's the play button, if he is holding the chocolate, it's the option button.

I was thinking that they would be in a circle, floating around him, like the picture. And everytime someone uses the keyboard arrows or click onto the candy, it would go to his hand and show what is that button on his t-shirt.

So.. My question is, how to make a rotate menu? Like, I can click on chocolate and shows option on his t-shirt, and just then I can click on the option button and go to options. Also, let me see if I'm getting this right. The image of him sit should be on a cube and the camera should be looking at it. And the images os the candys should be GUITexture, right?

I'm a little loss on how to do it. Oh, and I'm programming with C#. =]