Hi Ken, thanx for the advice. I already have thumbs plus but to use that you have to load and render each obp and each mat to make a pic to thumbnail. Since I have several gigabytes of obp & mat files, it would take me months. According to wolfie's site, his program, if he ever made it available, would go thru a folder and directly read each obp or mat, extract the thumbnails & make an html file with all of them. I was hoping someone else had built something to do the same thing since wolfie's program apparently won't be available again in the foreseeable future.