To the best of my knowledge, Workgroup PDM doesn't have a method to search by Date Modified. (I.e. I want to know what files were checked-in between these two dates.) I needed to do this during my upgrade to PDM Standard recently and found the method below to be a reasonable hack. It's not perfect, but it produced the results that I needed. I'd love to hear about improvements or alternatives, as it looks like I might be keeping Workgroup PDM around for a little longer than I had anticipated.