Antonella,

I replied to this one last week, I'm not sure why it never showed up. I actually did make changes in that file--but they were to your stimulus folder rather than your input file. I changed the stimuli to gif images that were listed as movies, e.g.,

_dinosaur.gif (250x50)
_turtle.gif (250x50)
_mouse.gif (250x50)

That was because I found that DirectRT was more open to displaying other videos while another video was playing than it was to displaying images. Just so happens that DRT will allow you to present images as if they were videos using the standard video syntax.