Scenarist driving me crazy!, need some help

[doson]

Until lately I've been using maestro to author my DVDs, and they were all great. I was always authoring them in widescreen (anamorphic that is), just in case i'll buy a widescreen TV someday...
Now I moved to scenarist, when I create a new project I always set aspect ratio to 16:9, then, when I grab a video to a title it's fine, but if I want to make a still menu in the same title, also in widescreen, and set the image aspect ratio to 16:9 it won't let me do this becuase the title allready has an aspect ratio of 4:3 (because of the movie I guess, I'm not that familiar with scenarist yet), though I selected 16:9, and I absolutely can't find any way to change the movie AR to 16:9 to inside the project, and I don't want it to be 4:3 (because of the way I encoded it, especialy for widescreen, that means a *streched image*).
I hope that you understand what I want here, my english is quite good (that's what I think at least), but that's the best I can do to explain my problem. So, if anyone managed to understand what I want, please help.

Thanks.

[twinegar]

Where do you get Maestro from? Thanks.

[Baldrick]

http://www.sonic.com/products/scenarist/default.htm
it is very expensive...