I have prepared my photo archives in form of a series of pptx files ordered by year. Through an action field I open the file of another year without going back to the shell or the explorer. This works pretty well in a slide show with friends. Now scince the exact path, specific to my PC only, is included in the action command, the bundle of ppt's will not work properly if transferred to a different computer. I would prefer that the main presentation running would look for the new file just within the same directory it is running in.