I am thinking about buying a Sharp XV-Z90E DLP front projector but there is one thing I am not sure about and it seems that I can´t get a straight answer from the dealer. In the catalogue it says that the projector has "switchable screen with 4:3 and 16:9 aspect ratios". Does that mean that I can watch widescreen movies with a WS screen on my wall just like a WS TV. Or does it meen that I can only watch WS movies like it´s a 4:3 TV (that is, with the huge black bars on the top and bottom)then only using 4:3 projector screen on my wall. I hope you understand this question... because I don´t.