Dialog popup when program executed.

I want some extra parameters intialized before I run my actual application which is a dialog. I want to have a smaller dialog to popup when I first run my program to ask for the two parameters.

How would I go about doing this?

Would I have my smaller dialog be a parent to my main dialog?

This is in MFC. Thank you.

Just use all dialogs. Your main one should be loaded, if it doesn't find any parameters, it should load another dialog.