Moving from elements 7 to elements 9

Hi.
I have 2 photos open in elements 7 of which i can see one behind the other.
I click on one and drag it ontop the other.
This is done as the two photos do not fill up the whole screen area if you no what i mean.
Having done that i now have Background & Layer1

Now i wish to do the same thing in elements 9

Now i have noticed that the photo now fills the whole screen area.
I have noticed at the top of each photo is a tab with its name etc.
Watching on you tube i see people click on one photo tab copy then paste on second photo tab but this didnt work for me.
I also see people click on one and drag to the other but this also did not work for me.
I see also a setting under window remove the tick from application frame which then made the photos not fill the whole screen area and tabs were gone,so now like elements 7,this also didnt work for me as these instructions were for Mac only.

How do i get this like elements 7 or how to i put one on top the other so i can use the layer mask option.

Thanks