Having been along time MAME32 user for the past couple of years.  I've decided to switch to MAMEWAH.
Question, in MAME32, your able to change the "Aspect Ratio" from 4:3 to a larger number.  I've been using 23:21 in MAME32 and it widens the image so it looks more fuller on my 27" TV.  
Just wondering if your able to change the 4:3 in MAMEWAH?  As I can't seem to be able to change it.
Thanks!
-GGKoul