I just upgraded to PSE 10 & keep running into questions:

I am used to having my workspace display all the open files in Cascade (in Edit mode), which gives me the freedom to move open files around. When I go to the Window Tab & Images.... Tile is the only option that it will let me choose. All the others are greyed out.... Why? Oh why?
Funny how you get so used to something & then it messes me up so much not to have it that way.....
If anyone has any suggests to this or other tricks they've learned I will take them & run.