I've just installed wptouch and managed to get everything the way I wanted it so far except for displaying a thumbnail next to my post.
In my posts I have two custom fields one for articleimg and one for thumb which both direct to the same image. Which is what I thought wptouch would use. I also tried adding the featured image on the right hand side below the tag's box but that didn't seem to solve the problem.
So I'm left scratching my head?