Solution Explorer window permanently maximized

I have VC 2.2 PE.  Using NATIVE mode, my Solution Explorer is now permanently enlarged and I don't know how I managed to do that.

Also, when I open a source member in a Project, the slider bar is all the way to the right.

Before, I had the SE window on the right with the program slider bar just to the left of that.

I looked thru the doc but cannot find where to reset this condition.

Does anyone know the fix for this?

Thanks.