Image apsect ratio - MF4

[microsome]

Hi,

I generated a DVD conatining 16:9 movie clips and a slideshow containing 4:3 images. After finalizing the project the images are in 16:9 aspect ratio and therefore distorted.
I browsed through the manual and found that there are supposed to be a check box in the preferences that keeps the image aspect ratio....strangely this check box does not exist in my software. I'm using the 4.04 version on MF.

Does anybody have a clue?

Thanks guys!