I have a project to do that includes programming. 

I would like to use visual basic for applications in 3ds max. 

First of all I have designed 2 cars in 3ds max. The first one is a small car and the second a bigger one. All I have to do is to write a source code in visual basic that prompts the user to choose from two options (small or large car). The selected option should open the corresponding 3ds max file.

I think that's not too hard to do. Is it? Can you please help me and guide me? What do I have to read?

 I hope you can understand what I mean.

Thank you!