How to open two view i MFC

Hi!
This is my problem:
I'm doing my program in MDI app. I want yo create my user interface in such way that if you pressure one button you get to see a view with line graph.
If you pressure the second button you get to see a new view with another line graph.
I want these two view's to been showed beside each other so I can compare the graphs.

Where do I create new view?

I try to do that i CMainFrm and CMyApp but that didn't succeed.
I heard it's easy to create a new view but I don't understand where I do that........
Do I need to create some new classes that inherit from CView or some other classes........
I am confused!!!!

Can anybody help me!

Please Help....