I've got a main screen for my game with 4 buttons: new, load, options, and quit.
When the player clicks options, I was basically wanting to stay in the same window but erase everything and start over; maybe using a different handle and window procedure(?) The new window will be called (drum roll) the "Options Window" and have it's own stuff.
My boss told me "You must change without changing, my son"
He also said "If you cannot change without changing, it will be time for you to leave"