2 questions on DirectDraw

Hi!

I have an App using directDraw and running fullscreen , exclusive mode

1st: When I handle mouse moves, the last rows and columns on the side of the screen dont catch mouse movements. The coordinate that should be 1,1 is 0,0. In other words I have a one pixel frame (that i dont see) all around the screen. My question is ... how to make my window REALLY fullscreen (precreate window stuff i guess..)

2nd: When an ICQ message pops, my app loses focus and the screen switches to the icq message (isn't the whole point of "exclusive" to forbid this situation ?). When I use alt-tab to go back to my app, its all black
I know i should restore my surfaces (what i don't do yet..), but the thing is : alt-F4 doesn't work anymore and that look worst than a simple surface_lost problem

Thanks!