windows form

Question

Iam creating an application.
i have a main form
it has 5 buttons
i have created 5 more forms.
my aim is to show a particular form for every button
the form is opened in a new window

i dont want to open in a new window
it should be embed in the main form
when i click anthor button it will show the related form in place of previous form

plzzzzzzzz give me the solution
Thanks in advance