[edited from support email]

I've been using Medialab for the past seven years, but am running into new territory. I am designing a study that employs subliminal images. In MediaLab the "d" parameter has a minimum of 1 second and I need a duration in the millisecond range. Is that possible with MediaLab? Or will I have to use DirectRT? Is it possible to use another program, such as PowerPoint? The university purchased a site licence for both MediaLab and DirectRT last year (after years of persuasion!), so I can easily switch to DirectRT.