i have a simple question about the use of the tab button when a window pops up with 2 selections, such as the example above. when i hit the tab button, a blue selection outline will jump over to the other button, in this case, "Add", but if i hit return, it'll still select "Don't Add". this makes the tab pretty useless. what do i need to do so that i can select the other button without my hands leaving the keyboard to go to the mouse? thanks.